From aa939d8bf7ed5360b721a920770336dd6dff1c1c Mon Sep 17 00:00:00 2001
From: vieron <javiersanchezmarin@gmail.com>
Date: Mon, 23 Jul 2012 22:08:09 +0200
Subject: [PATCH] updated docs and dist

---
 dist/jquery.gridster.css                      |   8 +-
 dist/jquery.gridster.js                       | 581 ++++++++++--------
 dist/jquery.gridster.min.css                  |   2 +-
 dist/jquery.gridster.min.js                   |   2 +-
 docs/api.js                                   |   4 +-
 ...her DOM elements or\nCoords objects..html" |  97 ++-
 ...d with any DOM element can\ncollide..html" |  70 ++-
 docs/classes/Draggable.html                   | 207 ++++++-
 docs/classes/Gridster.html                    | 218 ++++---
 docs/data.json                                | 298 +++++----
 docs/files/src_jquery.collision.js.html       | 302 +++++----
 docs/files/src_jquery.coords.js.html          |  35 +-
 docs/files/src_jquery.draggable.js.html       |  62 +-
 docs/files/src_jquery.gridster.js.html        | 250 ++++----
 docs/index.html                               |  20 +-
 15 files changed, 1387 insertions(+), 769 deletions(-)
 rename docs/classes/Collision.html => "docs/classes/Collision\n\nDetects collisions between a DOM element against other DOM elements or\nCoords objects..html" (80%)
 rename docs/classes/Coords.html => "docs/classes/Coords\n\nCreates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)\nto simulate DOM elements on the screen.\nCoords is used by Gridster to create a faux grid with any DOM element can\ncollide..html" (71%)

diff --git a/dist/jquery.gridster.css b/dist/jquery.gridster.css
index 800e228bbb..986c69f573 100644
--- a/dist/jquery.gridster.css
+++ b/dist/jquery.gridster.css
@@ -45,10 +45,10 @@
 
 .gridster .dragging {
     z-index: 10!important;
-    -webkit-transition: none!important;
-    -moz-transition: none!important;
-    -o-transition: none!important;
-    transition: none!important;
+    -webkit-transition: all 0s !important;
+    -moz-transition: all 0s !important;
+    -o-transition: all 0s !important;
+    transition: all 0s !important;
 }
 
 /* Uncomment this if you set helper : "clone" in draggable options */
diff --git a/dist/jquery.gridster.js b/dist/jquery.gridster.js
index 54497cffaf..2cc3b61937 100644
--- a/dist/jquery.gridster.js
+++ b/dist/jquery.gridster.js
@@ -4,10 +4,16 @@
 
 ;(function($, window, document, undefined){
     /**
-    * Coords
-    *
     * @class Coords
-    * @param {HTMLElement|Object} obj HTMLElement or a literal Object with the left, top, width and height properties.
+    *
+    * Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+    * to simulate DOM elements on the screen.
+    * Coords is used by Gridster to create a faux grid with any DOM element can
+    * collide.
+    *
+    * @param {HTMLElement|Object} obj The jQuery HTMLElement or a object with: left,
+    * top, width and height properties.
+    * @return {Object} Coords instance.
     * @constructor
     */
     function Coords(obj) {
@@ -23,8 +29,10 @@
         return this;
     }
 
+
     var fn = Coords.prototype;
 
+
     fn.init = function(){
         this.set();
         this.original_coords = this.get();
@@ -82,6 +90,7 @@
         return this.coords;
     };
 
+
     //jQuery adapter
     $.fn.coords = function() {
         if (this.data('coords') ) {
@@ -98,198 +107,216 @@
 ;(function($, window, document, undefined){
 
     var defaults = {
-      colliders_context: document.body,
-      on_overlap: function(collider_data){},
-      on_overlap_start : function(collider_data){
-          // console.log('the element START being a collider', collider_data);
-      },
-      on_overlap_stop : function(collider_data){
-          // console.log('the element STOP being a collider', collider_data);
-      }
+        colliders_context: document.body
+        // ,on_overlap: function(collider_data){},
+        // on_overlap_start : function(collider_data){},
+        // on_overlap_stop : function(collider_data){}
     };
 
+
     /**
-    * Collision
-    *
     * @class Collision
+    *
+    * Detects collisions between a DOM element against other DOM elements or
+    * Coords objects.
+    *
     * @uses Coords
-    * @param {HTMLElement} element An Attribute name or object property path
-    * @param {String|HTMLElement|Array} colliders An Attribute name or object property path
-    * @param {Object} [options] An Attribute name or object property path
-    *   @param {Function} [options.on_overlap] An Attribute name or object property path
-    *   @param {Function} [options.on_overlap_start] An Attribute name or object property path
-    *   @param {Function} [options.on_overlap_stop] An Attribute name or object property path
-    * @return {Object} dasdasdadasd
+    * @param {HTMLElement} el The jQuery wrapped HTMLElement.
+    * @param {HTMLElement|Array} colliders Can be a jQuery collection
+    *  of HTMLElements or an Array of Coords instances.
+    * @param {Object} [options] An Object with all options you want to
+    *        overwrite:
+    *   @param {Function} [options.on_overlap_start] Executes a function the first
+    *    time each `collider ` is overlapped.
+    *   @param {Function} [options.on_overlap_stop] Executes a function when a
+    *    `collider` is no longer collided.
+    *   @param {Function} [options.on_overlap] Executes a function when the
+    * mouse is moved during the collision.
+    * @return {Object} Collision instance.
     * @constructor
     */
-    function Collision(element, colliders, options) {
-      this.options = $.extend(defaults, options);
-      this.$element = element;
-      this.last_colliders = [];
-      this.last_colliders_coords = [];
-      if (typeof colliders === 'string' || colliders instanceof jQuery) {
-          this.$colliders = $(colliders,
-               this.options.colliders_context).not(this.$element);
-      }else{
-          this.colliders = $(colliders);
-      }
+    function Collision(el, colliders, options) {
+        this.options = $.extend(defaults, options);
+        this.$element = el;
+        this.last_colliders = [];
+        this.last_colliders_coords = [];
+        if (typeof colliders === 'string' || colliders instanceof jQuery) {
+            this.$colliders = $(colliders,
+                 this.options.colliders_context).not(this.$element);
+        }else{
+            this.colliders = $(colliders);
+        }
 
-      this.init();
+        this.init();
     }
 
+
     var fn = Collision.prototype;
 
+
     fn.init = function() {
-      this.find_collisions();
+        this.find_collisions();
     };
 
+
     fn.overlaps = function(a, b) {
-      var x = false;
-      var y = false;
+        var x = false;
+        var y = false;
 
-      if ((b.x1 >= a.x1 && b.x1 <= a.x2) ||
-          (b.x2 >= a.x1 && b.x2 <= a.x2) ||
-          (a.x1 >= b.x1 && a.x2 <= b.x2)
-      ) { x = true; }
+        if ((b.x1 >= a.x1 && b.x1 <= a.x2) ||
+            (b.x2 >= a.x1 && b.x2 <= a.x2) ||
+            (a.x1 >= b.x1 && a.x2 <= b.x2)
+        ) { x = true; }
 
-      if ((b.y1 >= a.y1 && b.y1 <= a.y2) ||
-          (b.y2 >= a.y1 && b.y2 <= a.y2) ||
-          (a.y1 >= b.y1 && a.y2 <= b.y2)
-      ) { y = true; }
+        if ((b.y1 >= a.y1 && b.y1 <= a.y2) ||
+            (b.y2 >= a.y1 && b.y2 <= a.y2) ||
+            (a.y1 >= b.y1 && a.y2 <= b.y2)
+        ) { y = true; }
 
-      return (x && y);
+        return (x && y);
     };
 
+
     fn.detect_overlapping_region = function(a, b){
-      var regionX = '';
-      var regionY = '';
+        var regionX = '';
+        var regionY = '';
 
-      if (a.y1 > b.cy && a.y1 < b.y2) { regionX = 'N'; }
-      if (a.y2 > b.y1 && a.y2 < b.cy) { regionX = 'S'; }
-      if (a.x1 > b.cx && a.x1 < b.x2) { regionY = 'W'; }
-      if (a.x2 > b.x1 && a.x2 < b.cx) { regionY = 'E'; }
+        if (a.y1 > b.cy && a.y1 < b.y2) { regionX = 'N'; }
+        if (a.y2 > b.y1 && a.y2 < b.cy) { regionX = 'S'; }
+        if (a.x1 > b.cx && a.x1 < b.x2) { regionY = 'W'; }
+        if (a.x2 > b.x1 && a.x2 < b.cx) { regionY = 'E'; }
 
-      return (regionX + regionY) || 'C';
+        return (regionX + regionY) || 'C';
     };
 
+
     fn.calculate_overlapped_area_coords = function(a, b){
-      var x1 = Math.max(a.x1, b.x1);
-      var y1 = Math.max(a.y1, b.y1);
-      var x2 = Math.min(a.x2, b.x2);
-      var y2 = Math.min(a.y2, b.y2);
+        var x1 = Math.max(a.x1, b.x1);
+        var y1 = Math.max(a.y1, b.y1);
+        var x2 = Math.min(a.x2, b.x2);
+        var y2 = Math.min(a.y2, b.y2);
 
-      return $({
-          left: x1,
-          top: y1,
-          width : (x2 - x1),
-          height: (y2 - y1)
-        }).coords().get();
+        return $({
+            left: x1,
+            top: y1,
+             width : (x2 - x1),
+            height: (y2 - y1)
+          }).coords().get();
     };
 
+
     fn.calculate_overlapped_area = function(coords){
-      return (coords.width * coords.height);
+        return (coords.width * coords.height);
     };
 
+
     fn.manage_colliders_start_stop = function(new_colliders_coords, start_callback, stop_callback){
-      var last = this.last_colliders_coords;
+        var last = this.last_colliders_coords;
 
-      for (var i = 0, il = last.length; i < il; i++) {
-          if ($.inArray(last[i], new_colliders_coords) === -1) {
-              start_callback.call(this, last[i]);
-          }
-      }
+        for (var i = 0, il = last.length; i < il; i++) {
+            if ($.inArray(last[i], new_colliders_coords) === -1) {
+                start_callback.call(this, last[i]);
+            }
+        }
 
-      for (var j = 0, jl = new_colliders_coords.length; j < jl; j++) {
-          if ($.inArray(new_colliders_coords[j], last) === -1) {
-              stop_callback.call(this, new_colliders_coords[j]);
-          }
+        for (var j = 0, jl = new_colliders_coords.length; j < jl; j++) {
+            if ($.inArray(new_colliders_coords[j], last) === -1) {
+                stop_callback.call(this, new_colliders_coords[j]);
+            }
 
-      }
+        }
     };
 
+
     fn.find_collisions = function(player_data_coords){
-      var self = this;
-      var colliders_coords = [];
-      var colliders_data = [];
-      var $colliders = (this.colliders || this.$colliders);
-      var count = $colliders.length;
-      var player_coords = self.$element.coords().update(player_data_coords || false).get();
+        var self = this;
+        var colliders_coords = [];
+        var colliders_data = [];
+        var $colliders = (this.colliders || this.$colliders);
+        var count = $colliders.length;
+        var player_coords = self.$element.coords()
+                             .update(player_data_coords || false).get();
 
-      while(count--){
-        var $collider = self.$colliders ? $($colliders[count]) : $colliders[count];
-        var $collider_coords_ins = ($collider.isCoords) ?
-                $collider : $collider.coords();
-        var collider_coords = $collider_coords_ins.get();
-        var overlaps = self.overlaps(player_coords, collider_coords);
+        while(count--){
+          var $collider = self.$colliders ?
+                           $($colliders[count]) : $colliders[count];
+          var $collider_coords_ins = ($collider.isCoords) ?
+                  $collider : $collider.coords();
+          var collider_coords = $collider_coords_ins.get();
+          var overlaps = self.overlaps(player_coords, collider_coords);
 
-        if (!overlaps) {
-          continue;
+          if (!overlaps) {
+            continue;
+          }
+
+          var region = self.detect_overlapping_region(
+              player_coords, collider_coords);
+
+            //todo: make this an option
+            if (region === 'C'){
+                var area_coords = self.calculate_overlapped_area_coords(
+                    player_coords, collider_coords);
+                var area = self.calculate_overlapped_area(area_coords);
+                var collider_data = {
+                    area: area,
+                    area_coords : area_coords,
+                    region: region,
+                    coords: collider_coords,
+                    player_coords: player_coords,
+                    el: $collider
+                };
+
+                if (self.options.on_overlap) {
+                    self.options.on_overlap.call(this, collider_data);
+                }
+                colliders_coords.push($collider_coords_ins);
+                colliders_data.push(collider_data);
+            }
         }
 
-        var region = self.detect_overlapping_region(player_coords,
-             collider_coords);
-        //todo: make this if customizable
-        if (region === 'C'){
-            var area_coords = self.calculate_overlapped_area_coords(
-                 player_coords, collider_coords);
-            var area = self.calculate_overlapped_area(area_coords);
-            var collider_data = {
-                area: area,
-                area_coords : area_coords,
-                region: region,
-                coords: collider_coords,
-                player_coords: player_coords,
-                el: $collider
-            };
-
-            self.options.on_overlap.call(this, collider_data);
-            colliders_coords.push($collider_coords_ins);
-            colliders_data.push(collider_data);
+        if (self.options.on_overlap_stop || self.options.on_overlap_start) {
+            this.manage_colliders_start_stop(colliders_coords,
+                self.options.on_overlap_stop, self.options.on_overlap_start);
         }
 
-      }
+        this.last_colliders_coords = colliders_coords;
 
-      this.manage_colliders_start_stop(colliders_coords,
-          self.options.on_overlap_stop, self.options.on_overlap_start);
-
-      this.last_colliders_coords = colliders_coords;
-
-      return colliders_data;
+        return colliders_data;
     };
 
 
     fn.get_closest_colliders = function(player_data_coords){
-      var colliders = this.find_collisions(player_data_coords);
-      var min_area = 100;
-      colliders.sort(function(a, b){
+        var colliders = this.find_collisions(player_data_coords);
+        var min_area = 100;
+        colliders.sort(function(a, b){
+            if (a.area <= min_area) {
+              return 1;
+            }
 
-          if (a.area <= min_area) {
-            return 1;
-          }
+            /* if colliders are being overlapped by the "C" (center) region,
+             * we have to set a lower index in the array to which they are placed
+             * above in the grid. */
+            if (a.region === 'C' && b.region === 'C') {
+                if (a.coords.y1 < b.coords.y1 || a.coords.x1 < b.coords.x1) {
+                    return - 1;
+                }else{
+                    return 1;
+                }
+            }
 
-          /* if colliders are being overlapped by the "C" (center) region,
-           * we have to set a lower index in the array to which they are placed
-           * above in the grid. */
-          if (a.region === 'C' && b.region === 'C') {
-            if (a.coords.y1 < b.coords.y1 || a.coords.x1 < b.coords.x1) {
-                return - 1;
-            }else{
+            if (a.area < b.area){
                 return 1;
             }
-          }
 
-          if (a.area < b.area){
-             return 1;
-          }
-
-          return 1;
-      });
-      return colliders;
+            return 1;
+        });
+        return colliders;
     };
 
+
     //jQuery adapter
     $.fn.collision = function(collider, options) {
-      return new Collision( this, collider, options );
+          return new Collision( this, collider, options );
     };
 
 
@@ -343,24 +370,42 @@
         items: '.gs_w',
         distance: 1,
         limit: true,
-        offset_left: 0,
-        drag: function(e){},
-        start : function(e, ui){},
-        stop : function(e){}
+        offset_left: 0
+        // ,drag: function(e){},
+        // start : function(e, ui){},
+        // stop : function(e){}
     };
 
     var $body = $(document.body);
 
 
     /**
-    * Draggable
-    *
     * @class Draggable
+    *
+    * @param {HTMLElement} el The HTMLelement that contains all the widgets
+    *  to be dragged.
+    * @param {Object} [options] An Object with all options you want to
+    *        overwrite:
+    *    @param {HTMLElement|String} [options.items] Define who will
+    *     be the draggable items. Can be a CSS Selector String or a
+    *     collection of HTMLElements.
+    *    @param {Number} [options.distance] Distance in pixels after mousedown
+    *     the mouse must move before dragging should start.
+    *    @param {Boolean} [options.limit] Constrains dragging to the width of
+    *     the container
+    *    @param {offset_left} [options.offset_left] Offset added to the item
+    *     that is being dragged.
+    *    @param {Number} [options.drag] Executes a callback when the mouse is
+    *     moved during the dragging.
+    *    @param {Number} [options.start] Executes a callback when the drag
+    *     starts.
+    *    @param {Number} [options.stop] Executes a callback when the drag stops.
+    * @return {Object} Returns `el`.
     * @constructor
     */
-    function Draggable(element, options) {
-      this.options = $.extend(defaults, options);
-      this.$container = $(element);
+    function Draggable(el, options) {
+      this.options = $.extend({}, defaults, options);
+      this.$container = $(el);
       this.$dragitems = $(this.options.items, this.$container);
       this.is_dragging = false;
       this.player_min_left = 0 + this.options.offset_left;
@@ -375,6 +420,7 @@
         this.enable();
     };
 
+
     fn.get_actual_pos = function($el) {
         var pos = $el.position();
         return pos;
@@ -390,6 +436,10 @@
 
 
     fn.drag_handler = function(e) {
+        if (e.which !== 1) {
+            return false;
+        };
+
         var self = this;
         var first = true;
         this.$player = $(e.currentTarget);
@@ -398,6 +448,7 @@
         this.mouse_init_pos = this.get_mouse_pos(e);
 
         $body.on('mousemove.draggable', function(mme){
+
             var mouse_actual_pos = self.get_mouse_pos(mme);
             var diff_x = Math.abs(mouse_actual_pos.left - self.mouse_init_pos.left);
             var diff_y = Math.abs(mouse_actual_pos.top - self.mouse_init_pos.top);
@@ -562,7 +613,7 @@
         extra_rows: 0,
         extra_cols: 0,
         min_cols: 1,
-        min_rows: 10,
+        min_rows: 15,
         autogenerate_stylesheet: true,
         avoid_overlapped_widgets: true,
         serialize_params: function($w, wgd) {
@@ -580,7 +631,7 @@
 
     /**
     * @class Gridster
-    * @uses Coords
+    * @uses Draggable
     * @uses Collision
     * @param {HTMLElement} el The HTMLelement that contains all the widgets.
     * @param {Object} [options] An Object with all options you want to
@@ -606,6 +657,9 @@
     *     `<head>` of the document. You can set this to false, and write
     *     your own CSS targeting rows and cols via data-attributes like so:
     *     `[data-col="1"] { left: 10px; }`
+    *    @param {Boolean} [avoid_overlapped_widgets] Avoid that widgets loaded
+    *     from the DOM can be overlapped. It is helpful if the positions were
+    *     bad stored in the database or if there was any conflict.
     *    @param {Function} [options.serialize_params] Return the data you want
     *     for each widget in the serialization. Two arguments are passed:
     *     `$w`: the jQuery wrapped HTMLElement, and `wgd`: the grid
@@ -614,8 +668,8 @@
     *     Collision class you want to overwrite. See Collision docs for
     *     more info.
     *    @param {Object} [options.draggable] An Object with all options for
-    *     jQuery UI Draggable you want to overwrite. See
-    *     http://jqueryui.com/demos/draggable/ for more info.
+    *     Draggable class you want to overwrite. See Draggable docs for more
+    *     info.
     *
     * @constructor
     */
@@ -623,7 +677,7 @@
       this.options = $.extend(true, defaults, options);
       this.$el = $(el);
       this.$wrapper = this.$el.parent();
-      this.$widgets = this.$el.find(this.options.widget_selector).addClass('gs_w');
+      this.$widgets = $(this.options.widget_selector, this.$el).addClass('gs_w');
       this.widgets = [];
       this.$changed = $([]);
       this.wrapper_width = this.$wrapper.width();
@@ -656,7 +710,7 @@
     * @method enable
     * @return {Class} Returns the instance of the Gridster Class.
     */
-    fn.disable = function(){
+    fn.disable = function() {
         this.$wrapper.find('.player-revert').removeClass('player-revert');
         this.drag_api.disable();
         return this;
@@ -669,7 +723,7 @@
     * @method enable
     * @return {Class} Returns the instance of the Gridster Class.
     */
-    fn.enable = function(){
+    fn.enable = function() {
         this.drag_api.enable();
         return this;
     }
@@ -758,14 +812,17 @@
         var $el = el instanceof jQuery ? el : $(el);
         var wgd = $el.coords().grid;
 
+        this.cells_occupied_by_placeholder = {};
         this.$widgets = this.$widgets.not($el);
 
         var $nexts = this.widgets_below($el);
+
         this.remove_from_gridmap(wgd);
 
-        $el.fadeOut($.proxy(function(){
+        $el.fadeOut($.proxy(function() {
             $el.remove();
-            $nexts.each($.proxy(function(i, widget){
+
+            $nexts.each($.proxy(function(i, widget) {
                 this.move_widget_up( $(widget), wgd.size_y );
             }, this));
 
@@ -789,9 +846,9 @@
     fn.serialize = function($widgets) {
         $widgets || ($widgets = this.$widgets);
         var result = [];
-        $widgets.each($.proxy(function(i, widget){
-            result.push( this.options.serialize_params(
-                $(widget),$(widget).coords().grid ) );
+        $widgets.each($.proxy(function(i, widget) {
+            result.push(this.options.serialize_params(
+                $(widget), $(widget).coords().grid ) );
         }, this));
 
         return result;
@@ -799,7 +856,8 @@
 
 
     /**
-    * Returns a serialized array of the widgets that have changed their position.
+    * Returns a serialized array of the widgets that have changed their
+    *  position.
     *
     * @method serialize_changed
     * @return {Array} Returns an Array of Objects with the data specified in
@@ -829,7 +887,7 @@
 
         if (this.options.avoid_overlapped_widgets &&
             !this.can_move_to(
-             { size_x: wgd.size_x, size_y: wgd.size_y }, wgd.col, wgd.row)
+             {size_x: wgd.size_x, size_y: wgd.size_y}, wgd.col, wgd.row)
         ) {
             wgd = this.next_position(wgd.size_x, wgd.size_y);
             wgd.el = $el;
@@ -882,7 +940,7 @@
     *  to update in the mapped array.
     * @return {Class} Returns the instance of the Gridster Class.
     */
-    fn.remove_from_gridmap = function(grid_data){
+    fn.remove_from_gridmap = function(grid_data) {
         return this.update_widget_position(grid_data, false);
     };
 
@@ -897,12 +955,12 @@
     *  position .
     * @return {Class} Returns the instance of the Gridster Class.
     */
-    fn.add_to_gridmap = function(grid_data, value){
+    fn.add_to_gridmap = function(grid_data, value) {
         this.update_widget_position(grid_data, value || grid_data.el);
 
         if (grid_data.el) {
             var $widgets = this.widgets_below(grid_data.el);
-            $widgets.each($.proxy(function(i, widget){
+            $widgets.each($.proxy(function(i, widget) {
                 this.move_widget_up( $(widget));
             }, this));
         }
@@ -910,8 +968,9 @@
 
 
     /**
-    * Make widgets draggable. It Wraps the jQuery UI Draggable Plugin.
+    * Make widgets draggable.
     *
+    * @uses Draggable
     * @method draggable
     * @return {Class} Returns the instance of the Gridster Class.
     */
@@ -921,7 +980,9 @@
             offset_left: this.options.widget_margins[0],
             items: '.gs_w',
             start: function(event, ui) {
-                self.$widgets.filter('.player-revert').removeClass('player-revert');
+                self.$widgets.filter('.player-revert')
+                    .removeClass('player-revert');
+
                 self.$player = $(this);
                 self.$helper = self.options.draggable.helper === 'clone' ?
                     $(ui.helper) : self.$player;
@@ -951,7 +1012,6 @@
     * @method on_start_drag
     * @param {Event} The original browser event
     * @param {Object} A prepared ui object.
-    *  See http://jqueryui.com/demos/draggable/ for more info.
     */
     fn.on_start_drag = function(event, ui) {
 
@@ -1003,14 +1063,15 @@
     * @method on_drag
     * @param {Event} The original browser event
     * @param {Object} A prepared ui object.
-    *  See http://jqueryui.com/demos/draggable/ for more info.
     */
     fn.on_drag = function(event, ui) {
         var abs_offset = {
             left: ui.position.left + this.baseX,
             top: ui.position.top + this.baseY
         }
-        this.colliders_data = this.collision_api.get_closest_colliders(abs_offset);
+
+        this.colliders_data = this.collision_api.get_closest_colliders(
+            abs_offset);
 
         this.on_overlapped_column_change(
             this.on_start_overlapping_column,
@@ -1040,10 +1101,10 @@
     * @method on_stop_drag
     * @param {Event} The original browser event
     * @param {Object} A prepared ui object.
-    *  See http://jqueryui.com/demos/draggable/ for more info.
     */
     fn.on_stop_drag = function(event, ui) {
-        this.$helper.add(this.$player).add(this.$wrapper).removeClass('dragging');
+        this.$helper.add(this.$player).add(this.$wrapper)
+            .removeClass('dragging');
 
         ui.position.left = ui.position.left + this.baseX;
         ui.position.top = ui.position.top + this.baseY;
@@ -1059,14 +1120,14 @@
             this.on_stop_overlapping_row
         );
 
-        this.$player
-        .addClass('player-revert').removeClass('player').attr({
-            'data-col': this.placeholder_grid_data.col,
-            'data-row': this.placeholder_grid_data.row
-        }).css({
-            'left': '',
-            'top': ''
-        });
+        this.$player.addClass('player-revert').removeClass('player')
+            .attr({
+                'data-col': this.placeholder_grid_data.col,
+                'data-row': this.placeholder_grid_data.row
+            }).css({
+                'left': '',
+                'top': ''
+            });
 
         this.$changed = this.$changed.add(this.$player);
 
@@ -1235,7 +1296,7 @@
         var wgd_can_go_up = [];
         var wgd_can_not_go_up = [];
 
-        $widgets.each($.proxy(function(i, w){
+        $widgets.each($.proxy(function(i, w) {
             var $w = $(w);
             var wgd = $w.coords().grid;
             if (this.can_go_widget_up(wgd)) {
@@ -1264,7 +1325,7 @@
     * @return {Array} Returns the array sorted.
     */
     fn.sort_by_row_asc = function(widgets) {
-        widgets = widgets.sort(function(a, b){
+        widgets = widgets.sort(function(a, b) {
            if (a.row > b.row) {
                return 1;
            }
@@ -1284,7 +1345,7 @@
     * @return {Array} Returns the array sorted.
     */
     fn.sort_by_row_and_col_asc = function(widgets) {
-        widgets = widgets.sort(function(a, b){
+        widgets = widgets.sort(function(a, b) {
            if (a.row > b.row || a.row == b.row && a.col > b.col) {
                return 1;
            }
@@ -1304,7 +1365,7 @@
     * @return {Array} Returns the array sorted.
     */
     fn.sort_by_col_asc = function(widgets) {
-        widgets = widgets.sort(function(a, b){
+        widgets = widgets.sort(function(a, b) {
            if (a.col > b.col) {
                return 1;
            }
@@ -1324,8 +1385,8 @@
     * @return {Array} Returns the array sorted.
     */
     fn.sort_by_row_desc = function(widgets) {
-        widgets = widgets.sort(function(a, b){
-            if (a.row + a.size_y < b.row + b.size_y){
+        widgets = widgets.sort(function(a, b) {
+            if (a.row + a.size_y < b.row + b.size_y) {
                 return 1;
             }
            return -1;
@@ -1346,7 +1407,7 @@
     * @return {Class} Returns the instance of the Gridster Class.
     */
     fn.manage_movements = function($widgets, to_col, to_row) {
-        $.each($widgets, $.proxy(function(i, w){
+        $.each($widgets, $.proxy(function(i, w) {
             var wgd = w;
             var $w = wgd.el;
 
@@ -1421,7 +1482,7 @@
     * @return {Boolean} Returns true or false.
     */
     fn.is_placeholder_in = function(col, row) {
-        var c = this.cells_occupied_by_placeholder || [];
+        var c = this.cells_occupied_by_placeholder || {};
         return this.is_placeholder_in_col(col) && $.inArray(row, c.rows) >= 0;
     };
 
@@ -1530,9 +1591,9 @@
         var cells = this.cells_occupied_by_player;
         var $widgets = $([]);
 
-        $.each(cells.cols, $.proxy(function(i, col){
-            $.each(cells.rows, $.proxy(function(i, row){
-                if(this.is_widget(col, row)){
+        $.each(cells.cols, $.proxy(function(i, col) {
+            $.each(cells.rows, $.proxy(function(i, row) {
+                if(this.is_widget(col, row)) {
                     $widgets = $widgets.add(this.gridmap[col][row]);
                 }
             }, this));
@@ -1573,8 +1634,6 @@
         this.placeholder_grid_data.col = col;
         this.placeholder_grid_data.row = row;
 
-
-
         this.cells_occupied_by_placeholder = this.get_cells_occupied(
             this.placeholder_grid_data);
 
@@ -1584,9 +1643,9 @@
         });
 
         if (moved_down || changed_column) {
-            $nexts.each($.proxy(function(i, widget){
+            $nexts.each($.proxy(function(i, widget) {
                 this.move_widget_up(
-                    $(widget), this.placeholder_grid_data.col - col + phgd.size_y);
+                 $(widget), this.placeholder_grid_data.col - col + phgd.size_y);
             }, this));
         }
 
@@ -1611,12 +1670,12 @@
 
         /* generate an array with columns as index and array with upper rows
          * empty as value */
-        this.for_each_column_occupied(widget_grid_data, function(tcol){
+        this.for_each_column_occupied(widget_grid_data, function(tcol) {
             var grid_col = this.gridmap[tcol];
             var r = p_bottom_row + 1;
             upper_rows[tcol] = [];
 
-            while (--r > 0){
+            while (--r > 0) {
                 if (this.is_empty(tcol, r) || this.is_player(tcol, r) ||
                     this.is_widget(tcol, r) &&
                     grid_col[r].is($widgets_under_player)
@@ -1659,7 +1718,7 @@
 
         /* generate an array with columns as index and array with upper rows
          * empty as value */
-        this.for_each_column_occupied(widget_grid_data, function(tcol){
+        this.for_each_column_occupied(widget_grid_data, function(tcol) {
             var grid_col = this.gridmap[tcol];
             upper_rows[tcol] = [];
 
@@ -1670,7 +1729,9 @@
                     break;
                 }
 
-                if (!this.is_player(tcol, r) &&!this.is_placeholder_in(tcol, r)) {
+                if (!this.is_player(tcol, r) &&
+                    !this.is_placeholder_in(tcol, r)
+                ) {
                     upper_rows[tcol].push(r);
                 }
 
@@ -1706,7 +1767,7 @@
     * @return {Number|Boolean} Returns the upper row valid from the `upper_rows`
     *  for the widget in question.
     */
-    fn.get_valid_rows = function(widget_grid_data, upper_rows, min_row){
+    fn.get_valid_rows = function(widget_grid_data, upper_rows, min_row) {
         var p_top_row = widget_grid_data.row;
         var p_bottom_row = widget_grid_data.row + widget_grid_data.size_y - 1;
         var size_y = widget_grid_data.size_y;
@@ -1715,7 +1776,7 @@
 
         while (++r <= p_bottom_row ) {
             var common = true;
-            $.each(upper_rows, function(col, rows){
+            $.each(upper_rows, function(col, rows) {
                 if (rows && $.inArray(r, rows) === -1) {
                     common = false;
                 }
@@ -1784,8 +1845,8 @@
         var rows_from_bottom = this.cells_occupied_by_player.rows.slice(0);
         rows_from_bottom.reverse();
 
-        $.each(this.cells_occupied_by_player.cols, $.proxy(function(i, col){
-            $.each(rows_from_bottom, $.proxy(function(i, row){
+        $.each(this.cells_occupied_by_player.cols, $.proxy(function(i, col) {
+            $.each(rows_from_bottom, $.proxy(function(i, row) {
                 // if there is a widget in the player position
                 if (!this.gridmap[col]) { return true; } //next iteration
                 var $w = this.gridmap[col][row];
@@ -1872,7 +1933,8 @@
     * if they can.
     *
     * @method move_widget_to
-    * @param {HTMLElement} $widget The jQuery wrapped HTMLElement of the widget is going to be moved.
+    * @param {HTMLElement} $widget The jQuery wrapped HTMLElement of the
+    * widget is going to be moved.
     * @return {Class} Returns the instance of the Gridster Class.
     */
     fn.move_widget_to = function($widget, row) {
@@ -1895,12 +1957,12 @@
         this.$changed = this.$changed.add($widget);
 
 
-        $next_widgets.each(function(i, widget){
+        $next_widgets.each(function(i, widget) {
             var $w = $(widget);
             var wgd = $w.coords().grid;
             var can_go_up = self.can_go_widget_up(wgd);
 
-            if (can_go_up && can_go_up !== wgd.row){
+            if (can_go_up && can_go_up !== wgd.row) {
                 self.move_widget_to($w, can_go_up);
             }
         });
@@ -1924,33 +1986,31 @@
         var can_go_up = true;
         y_units || (y_units = 1);
 
-        // if (!this.can_go_up($widget)) { return false; } //break;
-        console.log($widget, y_units);
+        if (!this.can_go_up($widget)) { return false; } //break;
 
-        this.for_each_column_occupied(el_grid_data, function(col){
+        this.for_each_column_occupied(el_grid_data, function(col) {
             // can_go_up
             if ($.inArray($widget, moved) === -1) {
-                var widget_grid_data = $.extend({}, el_grid_data);
+                var widget_grid_data = $widget.coords().grid;
                 var next_row = actual_row - y_units;
-                next_row = this.can_go_up_to_row(widget_grid_data, col, next_row);
-                console.log('can_go_up_to_row?', $widget, y_units, next_row);
-                if (next_row === false) {
+                next_row = this.can_go_up_to_row(
+                    widget_grid_data, col, next_row);
+
+                if (!next_row) {
                     return true;
                 }
 
                 var $next_widgets = this.widgets_below($widget);
-                console.log('$next_widgets', $next_widgets);
 
                 this.remove_from_gridmap(widget_grid_data);
                 widget_grid_data.row = next_row;
                 this.add_to_gridmap(widget_grid_data);
-                console.log($widget, 'next-row', next_row);
-                $widget.attr('data-row', next_row);
+                $widget.attr('data-row', widget_grid_data.row);
                 this.$changed = this.$changed.add($widget);
 
                 moved.push($widget);
 
-                $next_widgets.each($.proxy(function(i, widget){
+                $next_widgets.each($.proxy(function(i, widget) {
                     this.move_widget_up($(widget), y_units);
                 }, this));
             }
@@ -1963,7 +2023,8 @@
     * Move down the specified widget and all below it.
     *
     * @method move_widget_down
-    * @param {HTMLElement} $widget The jQuery object representing the widget you want to move.
+    * @param {HTMLElement} $widget The jQuery object representing the widget
+    *  you want to move.
     * @param {Number} The number of cells that the widget has to move.
     * @return {Class} Returns the instance of the Gridster Class.
     */
@@ -1983,7 +2044,7 @@
 
             this.remove_from_gridmap(widget_grid_data);
 
-            $next_widgets.each($.proxy(function(i, widget){
+            $next_widgets.each($.proxy(function(i, widget) {
                 var $w = $(widget);
                 var wd = $w.coords().grid;
                 var tmp_y = this.displacement_diff(
@@ -2023,20 +2084,17 @@
         var actual_row = widget_grid_data.row;
         var r;
 
-        //generate an array with columns as index and array with upper rows empty in the column
-        this.for_each_column_occupied(widget_grid_data, function(tcol){
+        /* generate an array with columns as index and array with
+         * upper rows empty in the column */
+        this.for_each_column_occupied(widget_grid_data, function(tcol) {
             var grid_col = ga[tcol];
             urc[tcol] = [];
 
             r = actual_row;
-            while (r--){
-                var $w = this.is_widget(tcol, r);
-                console.log(tcol, r, $w, this.is_empty(tcol, r));
-                if ($w && $w.is(widget_grid_data.el) ||
-                    (this.is_empty(tcol, r) &&
-                    !this.is_placeholder_in(tcol, r))
+            while (r--) {
+                if (this.is_empty(tcol, r) &&
+                    !this.is_placeholder_in(tcol, r)
                 ) {
-                    console.log('push', tcol, r);
                     urc[tcol].push(r);
                 }else{
                     break;
@@ -2050,11 +2108,10 @@
 
         });
 
-        console.log('urc', urc);
-
         if (!result) { return false; }
 
-        //get common rows starting from upper position in all the columns widget occupies
+        /* get common rows starting from upper position in all the columns
+         * that widget occupies */
         r = row;
         for (r = 1; r < actual_row; r++) {
             var common = true;
@@ -2080,7 +2137,7 @@
         var diffs = [];
         var parent_max_y = parent_bgd.row + parent_bgd.size_y;
 
-        this.for_each_column_occupied(widget_grid_data, function(col){
+        this.for_each_column_occupied(widget_grid_data, function(col) {
             var temp_y_units = 0;
 
             for (var r = parent_max_y; r < actual_row; r++) {
@@ -2113,9 +2170,9 @@
         var next_row = el_grid_data.row + el_grid_data.size_y - 1;
         var $nexts = $([]);
 
-        this.for_each_column_occupied(el_grid_data, function(col){
+        this.for_each_column_occupied(el_grid_data, function(col) {
             self.for_each_widget_below(col, next_row,
-                function(tcol, trow){
+                function(tcol, trow) {
                     if (!self.is_player(this) &&
                         $.inArray(this, $nexts) === -1) {
                             $nexts = $nexts.add(this);
@@ -2167,9 +2224,9 @@
         var result = true;
         if (initial_row === 1) { return false; }
 
-        this.for_each_column_occupied(el_grid_data, function(col){
-            if (!$el.is(this.is_widget(col, prev_row)) &&
-                this.is_occupied(col, prev_row) ||
+        this.for_each_column_occupied(el_grid_data, function(col) {
+            var $w = this.is_widget(col, prev_row);
+            if (this.is_occupied(col, prev_row) ||
                 this.is_player(col, prev_row) ||
                 this.is_placeholder_in(col, prev_row)
             ) {
@@ -2185,8 +2242,8 @@
 
     /**
     * Check if it's possible to move a widget to a specific col/row. It takes
-    * into account the dimensions (`size_y` and `size_x` attrs. of the grid coords
-    *  object) the widget occupies.
+    * into account the dimensions (`size_y` and `size_x` attrs. of the grid
+    *  coords object) the widget occupies.
     *
     * @method can_move_to
     * @param {Object} widget_grid_data The grid coords object that represents
@@ -2212,7 +2269,7 @@
             return false;
         };
 
-        this.for_each_cell_occupied(future_wd, function(tcol, trow){
+        this.for_each_cell_occupied(future_wd, function(tcol, trow) {
             var $tw = this.is_widget(tcol, trow);
             if ($tw && (!widget_grid_data.el || $tw.is($w))) {
                 result = false;
@@ -2224,7 +2281,8 @@
 
 
     /**
-    * Given the leftmost column returns all columns that are overlapping with the player.
+    * Given the leftmost column returns all columns that are overlapping
+    *  with the player.
     *
     * @method get_targeted_columns
     * @param {Number} [from_col] The leftmost column.
@@ -2298,8 +2356,8 @@
     * @return {Class} Returns the instance of the Gridster Class.
     */
     fn.for_each_cell_occupied = function(grid_data, callback) {
-        this.for_each_column_occupied(grid_data, function(col){
-            this.for_each_row_occupied(grid_data, function(row){
+        this.for_each_column_occupied(grid_data, function(col) {
+            this.for_each_row_occupied(grid_data, function(row) {
                 callback.call(this, col, row);
             });
         });
@@ -2333,7 +2391,8 @@
     * @method for_each_row_occupied
     * @param {Object} el_grid_data The grid coords object that represents
     *  the widget.
-    * @param {Function} callback The function to execute on each column iteration. The row number is passed as first argument.
+    * @param {Function} callback The function to execute on each column
+    *  iteration. The row number is passed as first argument.
     * @return {Class} Returns the instance of the Gridster Class.
     */
     fn.for_each_row_occupied = function(el_grid_data, callback) {
@@ -2399,7 +2458,8 @@
     * @param {Number} col The column to start iterating.
     * @param {Number} row The row to start iterating.
     * @param {Function} callback The function to execute on each widget
-    * iteration. The value of `this` inside the function is the jQuery wrapped HTMLElement.
+    *  iteration. The value of `this` inside the function is the jQuery
+    *  wrapped HTMLElement.
     * @return {Class} Returns the instance of the Gridster Class.
     */
     fn.for_each_widget_above = function(col, row, callback) {
@@ -2415,7 +2475,8 @@
     * @param {Number} col The column to start iterating.
     * @param {Number} row The row to start iterating.
     * @param {Function} callback The function to execute on each widget
-    * iteration. The value of `this` inside the function is the jQuery wrapped HTMLElement.
+    *  iteration. The value of `this` inside the function is the jQuery wrapped
+    *  HTMLElement.
     * @return {Class} Returns the instance of the Gridster Class.
     */
     fn.for_each_widget_below = function(col, row, callback) {
@@ -2456,14 +2517,13 @@
     };
 
 
-
     fn.get_widgets_from = function(col, row) {
         var ga = this.gridmap;
         var $widgets = $();
 
         if (col) {
             $widgets = $widgets.add(
-                this.$widgets.filter(function(){
+                this.$widgets.filter(function() {
                     var tcol = $(this).attr('data-col');
                     return (tcol == col || tcol > col);
                 })
@@ -2472,7 +2532,7 @@
 
         if (row) {
             $widgets = $widgets.add(
-                this.$widgets.filter(function(){
+                this.$widgets.filter(function() {
                     var trow = $(this).attr('data-row');
                     return (trow == row || trow > row);
                 })
@@ -2492,7 +2552,6 @@
     fn.set_dom_grid_height = function() {
         var r = this.get_highest_occupied_cell().row;
         this.$el.css('height', r * this.min_widget_height);
-        // this.$widgets.draggable("option", "containment", this.$el);
         return this;
     };
 
@@ -2536,27 +2595,31 @@
 
         /* generate CSS styles for cols */
         for (i = opts.cols + extra_cells; i >= 0; i--) {
-            styles += opts.namespace + ' [data-col="'+ (i + 1) +'"] { left: ' +
-                        ((i * opts.widget_base_dimensions[0]) + (i *opts.widget_margins[0]) + ((i+1) * opts.widget_margins[0])) +
-                      'px;} ';
+            styles += (opts.namespace + ' [data-col="'+ (i + 1) + '"] { left:' +
+                ((i * opts.widget_base_dimensions[0]) +
+                (i * opts.widget_margins[0]) +
+                ((i + 1) * opts.widget_margins[0])) + 'px;} ');
         }
 
         /* generate CSS styles for rows */
         for (i = opts.rows + extra_cells; i >= 0; i--) {
-            styles += opts.namespace + ' [data-row="' + (i + 1) + '"] { top: ' +
-                      ((i * opts.widget_base_dimensions[1]) + (i * opts.widget_margins[1]) + ((i+1) * opts.widget_margins[1]) ) +
-                      'px;} ';
+            styles += (opts.namespace + ' [data-row="' + (i + 1) + '"] { top:' +
+                ((i * opts.widget_base_dimensions[1]) +
+                (i * opts.widget_margins[1]) +
+                ((i + 1) * opts.widget_margins[1]) ) + 'px;} ');
         }
 
 
         for (var y = 1; y < max_size_y; y++) {
-            styles += opts.namespace + ' [data-sizey="' + (y) + '"] { height: ' +
-                      (y * opts.widget_base_dimensions[1] + (y-1)*(opts.widget_margins[1]*2)) + 'px;}';
+            styles += (opts.namespace + ' [data-sizey="' + y + '"] { height:' +
+                (y * opts.widget_base_dimensions[1] +
+                (y - 1) * (opts.widget_margins[1] * 2)) + 'px;}');
         }
 
         for (var x = 1; x < max_size_x; x++) {
-            styles += opts.namespace + ' [data-sizex="' + (x) + '"] { width: ' +
-                    (x * opts.widget_base_dimensions[0] + (x-1)*(opts.widget_margins[0]*2)) + 'px;}';
+            styles += (opts.namespace + ' [data-sizex="' + x + '"] { width:' +
+                (x * opts.widget_base_dimensions[0] +
+                (x - 1) * (opts.widget_margins[0] * 2)) + 'px;}');
         }
 
         return this.add_style_tag(styles);
@@ -2570,7 +2633,7 @@
     * @param {String} css The styles to apply.
     * @return {Object} Returns the instance of the Gridster class.
     */
-    fn.add_style_tag = function(css){
+    fn.add_style_tag = function(css) {
       var d = document;
       var tag = d.createElement('style');
 
@@ -2634,7 +2697,7 @@
         this.baseX = ($(window).width() - aw) / 2;
         this.baseY = this.$wrapper.offset().top;
 
-        $.each(this.faux_grid, $.proxy(function(i, coords){
+        $.each(this.faux_grid, $.proxy(function(i, coords) {
             this.faux_grid[i] = coords.update({
                 left: this.baseX + (coords.data.col -1) * this.min_widget_width,
                 top: this.baseY + (coords.data.row -1) * this.min_widget_height
@@ -2653,7 +2716,7 @@
     * @return {Object} Returns the instance of the Gridster class.
     */
     fn.get_widgets_from_DOM = function() {
-        this.$widgets.each($.proxy(function(i, widget){
+        this.$widgets.each($.proxy(function(i, widget) {
             this.register_widget($(widget));
         }, this));
         return this;
diff --git a/dist/jquery.gridster.min.css b/dist/jquery.gridster.min.css
index 7d676b6f5b..3cce5bc9d1 100644
--- a/dist/jquery.gridster.min.css
+++ b/dist/jquery.gridster.min.css
@@ -1,3 +1,3 @@
 /*! gridster.js - v0.1.0 - 2012-07-23
 * https://github.com/ducksboard/gridster.js
-* Copyright (c) 2012 ducksboard; Licensed MIT, GPL */.gridster{position:relative}.gridster>*{margin:0 auto;-webkit-transition:height .4s;-moz-transition:height .4s;-o-transition:height .4s;-ms-transition:height .4s;transition:height .4s}.gridster .gs_w{z-index:2;position:absolute}.ready .gs_w:not(.preview-holder){-webkit-transition:opacity .3s,left .3s,top .3s;-moz-transition:opacity .3s,left .3s,top .3s;-o-transition:opacity .3s,left .3s,top .3s;transition:opacity .3s,left .3s,top .3s}.gridster .preview-holder{z-index:1;position:absolute;background-color:#fff;border-color:#fff;opacity:.3}.gridster .player-revert{z-index:10!important;-webkit-transition:left .3s,top .3s!important;-moz-transition:left .3s,top .3s!important;-o-transition:left .3s,top .3s!important;transition:left .3s,top .3s!important}.gridster .dragging{-webkit-transition:none!important;-moz-transition:none!important;-o-transition:none!important;transition:none!important}
\ No newline at end of file
+* Copyright (c) 2012 ducksboard; Licensed MIT, GPL */.gridster{position:relative}.gridster>*{margin:0 auto;-webkit-transition:height .4s;-moz-transition:height .4s;-o-transition:height .4s;-ms-transition:height .4s;transition:height .4s}.gridster .gs_w{z-index:2;position:absolute}.ready .gs_w:not(.preview-holder){-webkit-transition:opacity .3s,left .3s,top .3s;-moz-transition:opacity .3s,left .3s,top .3s;-o-transition:opacity .3s,left .3s,top .3s;transition:opacity .3s,left .3s,top .3s}.gridster .preview-holder{z-index:1;position:absolute;background-color:#fff;border-color:#fff;opacity:.3}.gridster .player-revert{z-index:10!important;-webkit-transition:left .3s,top .3s!important;-moz-transition:left .3s,top .3s!important;-o-transition:left .3s,top .3s!important;transition:left .3s,top .3s!important}.gridster .dragging{z-index:10!important;-webkit-transition:all 0s!important;-moz-transition:all 0s!important;-o-transition:all 0s!important;transition:all 0s!important}
\ No newline at end of file
diff --git a/dist/jquery.gridster.min.js b/dist/jquery.gridster.min.js
index bb48c41add..9be252218e 100644
--- a/dist/jquery.gridster.min.js
+++ b/dist/jquery.gridster.min.js
@@ -1,4 +1,4 @@
 /*! gridster.js - v0.1.0 - 2012-07-23
 * https://github.com/ducksboard/gridster.js
 * Copyright (c) 2012 ducksboard; Licensed MIT, GPL */
-(function(a,b,c,d){function e(b){return b[0]&&a.isPlainObject(b[0])?this.data=b[0]:this.el=b,this.isCoords=!0,this.coords={},this.init(),this}var f=e.prototype;f.init=function(){this.set(),this.original_coords=this.get()},f.set=function(a,b){var c=this.el;c&&!a&&(this.data={}||c.offset(),this.data.width=c.width(),this.data.height=c.height());if(c&&a&&!b){var d=c.offset();this.data.top=d.top,this.data.left=d.left}var e=this.data;return this.coords.x1=e.left,this.coords.y1=e.top,this.coords.x2=e.left+e.width,this.coords.y2=e.top+e.height,this.coords.cx=e.left+e.width/2,this.coords.cy=e.top+e.height/2,this.coords.width=e.width,this.coords.height=e.height,this.coords.el=c||!1,this},f.update=function(b){if(!b&&!this.el)return this;if(b){var c=a.extend({},this.data,b);return this.data=c,this.set(!0,!0)}return this.set(!0),this},f.get=function(){return this.coords},a.fn.coords=function(){if(this.data("coords"))return this.data("coords");var a=new e(this,arguments[0]);return this.data("coords",a),a}})(jQuery,window,document),function(a,b,c,d){function f(b,c,d){this.options=a.extend(e,d),this.$element=b,this.last_colliders=[],this.last_colliders_coords=[],typeof c=="string"||c instanceof jQuery?this.$colliders=a(c,this.options.colliders_context).not(this.$element):this.colliders=a(c),this.init()}var e={colliders_context:c.body,on_overlap:function(a){},on_overlap_start:function(a){},on_overlap_stop:function(a){}},g=f.prototype;g.init=function(){this.find_collisions()},g.overlaps=function(a,b){var c=!1,d=!1;if(b.x1>=a.x1&&b.x1<=a.x2||b.x2>=a.x1&&b.x2<=a.x2||a.x1>=b.x1&&a.x2<=b.x2)c=!0;if(b.y1>=a.y1&&b.y1<=a.y2||b.y2>=a.y1&&b.y2<=a.y2||a.y1>=b.y1&&a.y2<=b.y2)d=!0;return c&&d},g.detect_overlapping_region=function(a,b){var c="",d="";return a.y1>b.cy&&a.y1<b.y2&&(c="N"),a.y2>b.y1&&a.y2<b.cy&&(c="S"),a.x1>b.cx&&a.x1<b.x2&&(d="W"),a.x2>b.x1&&a.x2<b.cx&&(d="E"),c+d||"C"},g.calculate_overlapped_area_coords=function(b,c){var d=Math.max(b.x1,c.x1),e=Math.max(b.y1,c.y1),f=Math.min(b.x2,c.x2),g=Math.min(b.y2,c.y2);return a({left:d,top:e,width:f-d,height:g-e}).coords().get()},g.calculate_overlapped_area=function(a){return a.width*a.height},g.manage_colliders_start_stop=function(b,c,d){var e=this.last_colliders_coords;for(var f=0,g=e.length;f<g;f++)a.inArray(e[f],b)===-1&&c.call(this,e[f]);for(var h=0,i=b.length;h<i;h++)a.inArray(b[h],e)===-1&&d.call(this,b[h])},g.find_collisions=function(b){var c=this,d=[],e=[],f=this.colliders||this.$colliders,g=f.length,h=c.$element.coords().update(b||!1).get();while(g--){var i=c.$colliders?a(f[g]):f[g],j=i.isCoords?i:i.coords(),k=j.get(),l=c.overlaps(h,k);if(!l)continue;var m=c.detect_overlapping_region(h,k);if(m==="C"){var n=c.calculate_overlapped_area_coords(h,k),o=c.calculate_overlapped_area(n),p={area:o,area_coords:n,region:m,coords:k,player_coords:h,el:i};c.options.on_overlap.call(this,p),d.push(j),e.push(p)}}return this.manage_colliders_start_stop(d,c.options.on_overlap_stop,c.options.on_overlap_start),this.last_colliders_coords=d,e},g.get_closest_colliders=function(a){var b=this.find_collisions(a),c=100;return b.sort(function(a,b){return a.area<=c?1:a.region==="C"&&b.region==="C"?a.coords.y1<b.coords.y1||a.coords.x1<b.coords.x1?-1:1:a.area<b.area?1:1}),b},a.fn.collision=function(a,b){return new f(this,a,b)}}(jQuery,window,document),function(a,b){a.debounce=function(a,b,c){var d;return function(){var e=this,f=arguments,g=function(){d=null,c||a.apply(e,f)};c&&!d&&a.apply(e,f),clearTimeout(d),d=setTimeout(g,b)}},a.throttle=function(a,b){var c,d,e,f,g,h,i=debounce(function(){g=f=!1},b);return function(){c=this,d=arguments;var j=function(){e=null,g&&a.apply(c,d),i()};return e||(e=setTimeout(j,b)),f?g=!0:h=a.apply(c,d),i(),f=!0,h}}}(window),function(a,b,c,d){function g(b,c){this.options=a.extend(e,c),this.$container=a(b),this.$dragitems=a(this.options.items,this.$container),this.is_dragging=!1,this.player_min_left=0+this.options.offset_left,this.init()}var e={items:".gs_w",distance:1,limit:!0,offset_left:0,drag:function(a){},start:function(a,b){},stop:function(a){}},f=a(c.body),h=g.prototype;h.init=function(){this.$container.css("position","relative"),this.enable()},h.get_actual_pos=function(a){var b=a.position();return b},h.get_mouse_pos=function(a){return{left:a.clientX,top:a.clientY}},h.drag_handler=function(b){var c=this,d=!0;return this.$player=a(b.currentTarget),this.el_init_pos=this.get_actual_pos(this.$player),this.mouse_init_pos=this.get_mouse_pos(b),f.on("mousemove.draggable",function(a){var b=c.get_mouse_pos(a),e=Math.abs(b.left-c.mouse_init_pos.left),f=Math.abs(b.top-c.mouse_init_pos.top);return e>c.options.distance||f>c.options.distance?d?(d=!1,c.on_dragstart.call(c,a),!1):(c.is_dragging==!0&&throttle(c.on_dragmove.call(c,a),130),!1):!1}),!1},h.on_dragstart=function(a){return a.preventDefault(),this.drag_start=!0,this.is_dragging=!0,this.$container_offset=this.$container.offset(),this.options.helper==="clone"?(this.$helper=this.$player.clone().appendTo(this.$container).addClass("helper"),this.helper=!0):this.helper=!1,this.el_init_offset=this.$player.offset(),this.player_width=this.$player.width(),this.player_max_left=this.$container.width()-this.player_width+this.options.offset_left,this.options.start&&this.options.start.call(this.$player,a,{helper:this.helper?this.$helper:this.$player}),!1},h.get_offset=function(a){a.preventDefault();var b=this.get_mouse_pos(a),c=b.left-this.mouse_init_pos.left,d=b.top-this.mouse_init_pos.top,e=this.el_init_offset.left+c-this.$container_offset.left,f=this.el_init_offset.top+d-this.$container_offset.top;return this.options.limit&&(e>this.player_max_left?e=this.player_max_left:e<this.player_min_left&&(e=this.player_min_left)),{left:e,top:f}},h.on_dragmove=function(a){var b=this.get_offset(a);(this.helper?this.$helper:this.$player).css({position:"absolute",left:b.left,top:b.top});var c={position:{left:b.left,top:b.top}};return this.options.drag&&this.options.drag.call(this.$player,a,c),!1},h.on_dragstop=function(a){var b=this.get_offset(a);this.drag_start=!1;var c={position:{left:b.left,top:b.top}};return this.options.stop&&this.options.stop.call(this.$player,a,c),this.helper&&this.$helper.remove(),!1},h.enable=function(){this.$container.on("mousedown.draggable",this.options.items,a.proxy(this.drag_handler,this)),f.on("mouseup.draggable",a.proxy(function(a){this.is_dragging=!1,f.off("mousemove.draggable"),this.drag_start&&this.on_dragstop(a)},this))},h.disable=function(){this.$container.off("mousedown.draggable"),f.off("mouseup.draggable")},h.destroy=function(){this.disable(),a.removeData(this.$container,"draggable")},a.fn.draggable=function(b){return this.each(function(){a.data(this,"draggable")||a.data(this,"draggable",new g(this,b))})}}(jQuery,window,document),function(a,b,c,d){function f(b,c){this.options=a.extend(!0,e,c),this.$el=a(b),this.$wrapper=this.$el.parent(),this.$widgets=this.$el.find(this.options.widget_selector).addClass("gs_w"),this.widgets=[],this.$changed=a([]),this.wrapper_width=this.$wrapper.width(),this.min_widget_width=this.options.widget_margins[0]*2+this.options.widget_base_dimensions[0],this.min_widget_height=this.options.widget_margins[1]*2+this.options.widget_base_dimensions[1],this.init()}var e={widget_selector:"> li",widget_margins:[10,10],widget_base_dimensions:[400,225],extra_rows:0,extra_cols:0,min_cols:1,min_rows:10,autogenerate_stylesheet:!0,avoid_overlapped_widgets:!0,serialize_params:function(a,b){return{col:b.col,row:b.row}},collision:{},draggable:{distance:4}};f.generated_stylesheets=[];var g=f.prototype;g.init=function(){this.generate_grid_and_stylesheet(),this.get_widgets_from_DOM(),this.set_dom_grid_height(),this.$wrapper.addClass("ready"),this.draggable(),a(b).bind("resize",throttle(a.proxy(this.recalculate_faux_grid,this),200))},g.disable=function(){return this.drag_api.disable(),this},g.enable=function(){return this.drag_api.enable(),this},g.add_widget=function(b,c,d){var e=this.next_position(c,d),f=a(b).attr({"data-col":e.col,"data-row":e.row,"data-sizex":e.size_x,"data-sizey":e.size_y}).addClass("gs_w").appendTo(this.$el).hide();return this.$widgets=this.$widgets.add(f),this.register_widget(f),this.set_dom_grid_height(),f.fadeIn()},g.next_position=function(a,b){a||(a=1),b||(b=1);var c=this.gridmap,d=c.length,e=[];for(var f=1;f<d;f++){var g=c[f].length;for(var h=1;h<=g;h++){var i=this.can_move_to({size_x:a,size_y:b},f,h);i&&e.push({col:f,row:h,size_y:b,size_x:a})}}return e.length?this.sort_by_row_and_col_asc(e)[0]:!1},g.remove_widget=function(b,c){var d=b instanceof jQuery?b:a(b),e=d.coords().grid;this.$widgets=this.$widgets.not(d);var f=this.widgets_below(d);this.remove_from_gridmap(e),d.fadeOut(a.proxy(function(){d.remove(),f.each(a.proxy(function(b,c){this.move_widget_up(a(c),e.size_y)},this)),c&&c.apply(this,b)},this))},g.serialize=function(b){b||(b=this.$widgets);var c=[];return b.each(a.proxy(function(b,d){c.push(this.options.serialize_params(a(d),a(d).coords().grid))},this)),c},g.serialize_changed=function(){return this.serialize(this.$changed)},g.register_widget=function(a){var b={col:parseInt(a.attr("data-col"),10),row:parseInt(a.attr("data-row"),10),size_x:parseInt(a.attr("data-sizex"),10),size_y:parseInt(a.attr("data-sizey"),10),el:a};return this.options.avoid_overlapped_widgets&&!this.can_move_to({size_x:b.size_x,size_y:b.size_y},b.col,b.row)&&(b=this.next_position(b.size_x,b.size_y),b.el=a,a.attr({"data-col":b.col,"data-row":b.row,"data-sizex":b.size_x,"data-sizey":b.size_y})),a.data("coords",a.coords()),a.data("coords").grid=b,this.add_to_gridmap(b,a),this.widgets.push(a),this},g.update_widget_position=function(a,b){return this.for_each_cell_occupied(a,function(a,c){if(!this.gridmap[a])return this;this.gridmap[a][c]=b}),this},g.remove_from_gridmap=function(a){return this.update_widget_position(a,!1)},g.add_to_gridmap=function(b,c){this.update_widget_position(b,c||b.el);if(b.el){var d=this.widgets_below(b.el);d.each(a.proxy(function(b,c){this.move_widget_up(a(c))},this))}},g.draggable=function(){var b=this,c=a.extend(!0,{},this.options.draggable,{offset_left:this.options.widget_margins[0],items:".gs_w",start:function(c,d){b.$widgets.filter(".player-revert").removeClass("player-revert"),b.$player=a(this),b.$helper=b.options.draggable.helper==="clone"?a(d.helper):b.$player,b.helper=!b.$helper.is(b.$player),b.on_start_drag.call(b,c,d),b.$el.trigger("gridster:dragstart")},stop:function(a,c){b.on_stop_drag.call(b,a,c),b.$el.trigger("gridster:dragstop")},drag:function(a,c){b.on_drag.call(b,a,c),b.$el.trigger("gridster:drag")}});return this.drag_api=this.$el.draggable(c).data("draggable"),this},g.on_start_drag=function(b,c){this.$helper.add(this.$player).add(this.$wrapper).addClass("dragging"),this.$player.addClass("player"),this.player_grid_data=this.$player.coords().grid,this.placeholder_grid_data=a.extend({},this.player_grid_data),this.$el.css("height",this.$el.height()+this.player_grid_data.size_y*this.min_widget_height);var d=this.faux_grid,e=this.$player.data("coords").coords;this.cells_occupied_by_player=this.get_cells_occupied(this.player_grid_data),this.cells_occupied_by_placeholder=this.get_cells_occupied(this.placeholder_grid_data),this.last_cols=[],this.last_rows=[],this.collision_api=this.$helper.collision(d,this.options.collision),this.$preview_holder=a("<li />",{"class":"preview-holder","data-row":this.$player.attr("data-row"),"data-col":this.$player.attr("data-col"),css:{width:e.width,height:e.height}}).appendTo(this.$el),this.options.draggable.start&&this.options.draggable.start.call(this,b,c)},g.on_drag=function(a,b){var c={left:b.position.left+this.baseX,top:b.position.top+this.baseY};this.colliders_data=this.collision_api.get_closest_colliders(c),this.on_overlapped_column_change(this.on_start_overlapping_column,this.on_stop_overlapping_column),this.on_overlapped_row_change(this.on_start_overlapping_row,this.on_stop_overlapping_row),this.helper&&this.$player&&this.$player.css({left:b.position.left,top:b.position.top}),this.options.draggable.drag&&this.options.draggable.drag.call(this,a,b)},g.on_stop_drag=function(a,b){this.$helper.add(this.$player).add(this.$wrapper).removeClass("dragging"),b.position.left=b.position.left+this.baseX,b.position.top=b.position.top+this.baseY,this.colliders_data=this.collision_api.get_closest_colliders(b.position),this.on_overlapped_column_change(this.on_start_overlapping_column,this.on_stop_overlapping_column),this.on_overlapped_row_change(this.on_start_overlapping_row,this.on_stop_overlapping_row),this.$player.addClass("player-revert").removeClass("player").attr({"data-col":this.placeholder_grid_data.col,"data-row":this.placeholder_grid_data.row}).css({left:"",top:""}),this.$changed=this.$changed.add(this.$player),this.cells_occupied_by_player=this.get_cells_occupied(this.placeholder_grid_data),this.set_cells_player_occupies(this.placeholder_grid_data.col,this.placeholder_grid_data.row),this.$player.coords().grid.row=this.placeholder_grid_data.row,this.$player.coords().grid.col=this.placeholder_grid_data.col,this.$player=null,this.$preview_holder.remove(),this.set_dom_grid_height(),this.options.draggable.stop&&this.options.draggable.stop.call(this,a,b)},g.on_overlapped_column_change=function(b,c){if(!this.colliders_data.length)return;var d=this.get_targeted_columns(this.colliders_data[0].el.data.col),e=this.last_cols.length,f=d.length,g;for(g=0;g<f;g++)a.inArray(d[g],this.last_cols)===-1&&(b||a.noop).call(this,d[g]);for(g=0;g<e;g++)a.inArray(this.last_cols[g],d)===-1&&(c||a.noop).call(this,this.last_cols[g]);return this.last_cols=d,this},g.on_overlapped_row_change=function(b,c){if(!this.colliders_data.length)return;var d=this.get_targeted_rows(this.colliders_data[0].el.data.row),e=this.last_rows.length,f=d.length,g;for(g=0;g<f;g++)a.inArray(d[g],this.last_rows)===-1&&(b||a.noop).call(this,d[g]);for(g=0;g<e;g++)a.inArray(this.last_rows[g],d)===-1&&(c||a.noop).call(this,this.last_rows[g]);this.last_rows=d},g.set_player=function(a,b){this.empty_cells_player_occupies();var c=this,d=c.colliders_data[0].el.data,e=d.col,f=b||d.row;this.player_grid_data={col:e,row:f,size_y:this.player_grid_data.size_y,size_x:this.player_grid_data.size_x},this.cells_occupied_by_player=this.get_cells_occupied(this.player_grid_data);var g=this.get_widgets_overlapped(this.player_grid_data),h=this.widgets_constraints(g);this.manage_movements(h.can_go_up,e,f),this.manage_movements(h.can_not_go_up,e,f);if(!g.length){var i=this.can_go_player_up(this.player_grid_data);i!==!1&&(f=i),this.set_placeholder(e,f)}return{col:e,row:f}},g.widgets_constraints=function(b){var c=a([]),d,e=[],f=[];return b.each(a.proxy(function(b,d){var g=a(d),h=g.coords().grid;this.can_go_widget_up(h)?(c=c.add(g),e.push(h)):f.push(h)},this)),d=b.not(c),{can_go_up:this.sort_by_row_asc(e),can_not_go_up:this.sort_by_row_desc(f)}},g.sort_by_row_asc=function(a){return a=a.sort(function(a,b){return a.row>b.row?1:-1}),a},g.sort_by_row_and_col_asc=function(a){return a=a.sort(function(a,b){return a.row>b.row||a.row==b.row&&a.col>b.col?1:-1}),a},g.sort_by_col_asc=function(a){return a=a.sort(function(a,b){return a.col>b.col?1:-1}),a},g.sort_by_row_desc=function(a){return a=a.sort(function(a,b){return a.row+a.size_y<b.row+b.size_y?1:-1}),a},g.manage_movements=function(b,c,d){return a.each(b,a.proxy(function(a,b){var e=b,f=e.el,g=this.can_go_widget_up(e);if(g)this.move_widget_to(f,g),this.set_placeholder(c,g+e.size_y);else{var h=this.can_go_player_up(this.player_grid_data);if(!h){var i=d+this.player_grid_data.size_y-e.row;this.move_widget_down(f,i),this.set_placeholder(c,d)}}},this)),this},g.is_player=function(a,b){if(b&&!this.gridmap[a])return!1;var c=b?this.gridmap[a][b]:a;return c&&(c.is(this.$player)||c.is(this.$helper))},g.is_player_in=function(b,c){var d=this.cells_occupied_by_player;return a.inArray(b,d.cols)>=0&&a.inArray(c,d.rows)>=0},g.is_placeholder_in=function(b,c){var d=this.cells_occupied_by_placeholder||[];return this.is_placeholder_in_col(b)&&a.inArray(c,d.rows)>=0},g.is_placeholder_in_col=function(b){var c=this.cells_occupied_by_placeholder||[];return a.inArray(b,c.cols)>=0},g.is_empty=function(a,b){return typeof this.gridmap[a]!="undefined"&&typeof this.gridmap[a][b]!="undefined"&&this.gridmap[a][b]===!1?!0:!1},g.is_occupied=function(a,b){return this.gridmap[a]?this.gridmap[a][b]?!0:!1:!1},g.is_widget=function(a,b){var c=this.gridmap[a];return c?(c=c[b],c?c:!1):!1},g.is_widget_under_player=function(a,b){return this.is_widget(a,b)?this.is_player_in(a,b):!1},g.get_widgets_under_player=function(){var b=this.cells_occupied_by_player,c=a([]);return a.each(b.cols,a.proxy(function(d,e){a.each(b.rows,a.proxy(function(a,b){this.is_widget(e,b)&&(c=c.add(this.gridmap[e][b]))},this))},this)),c},g.set_placeholder=function(b,c){var d=a.extend({},this.placeholder_grid_data),e=this.widgets_below({col:d.col,row:d.row,size_y:d.size_y,size_x:d.size_x}),f=b+d.size_x-1;f>this.cols&&(b=b-(f-b));var g=this.placeholder_grid_data.row<c,h=this.placeholder_grid_data.col!==b;this.placeholder_grid_data.col=b,this.placeholder_grid_data.row=c,this.cells_occupied_by_placeholder=this.get_cells_occupied(this.placeholder_grid_data),this.$preview_holder.attr({"data-row":c,"data-col":b}),(g||h)&&e.each(a.proxy(function(c,e){this.move_widget_up(a(e),this.placeholder_grid_data.col-b+d.size_y)},this))},g.can_go_player_up=function(a){var b=a.row+a.size_y-1,c=!0,d=[],e=1e4,f=this.get_widgets_under_player();return this.for_each_column_occupied(a,function(a){var g=this.gridmap[a],h=b+1;d[a]=[];while(--h>0)if(this.is_empty(a,h)||this.is_player(a,h)||this.is_widget(a,h)&&g[h].is(f))d[a].push(h),e=h<e?h:e;else break;if(d[a].length===0)return c=!1,!0;d[a].sort()}),c?this.get_valid_rows(a,d,e):!1},g.can_go_widget_up=function(a){var b=a.row+a.size_y-1,c=!0,d=[],e=1e4;return this.for_each_column_occupied(a,function(a){var f=this.gridmap[a];d[a]=[];var g=b+1;while(--g>0){if(this.is_occupied(a,g)&&!this.is_player(a,g))break;!this.is_player(a,g)&&!this.is_placeholder_in(a,g)&&d[a].push(g),g<e&&(e=g)}if(d[a].length===0)return c=!1,!0;d[a].sort()}),c?this.get_valid_rows(a,d,e):!1},g.get_valid_rows=function(b,c,d){var e=b.row,f=b.row+b.size_y-1,g=b.size_y,h=d-1,i=[];while(++h<=f){var j=!0;a.each(c,function(b,c){c&&a.inArray(h,c)===-1&&(j=!1)});if(j===!0){i.push(h);if(i.length===g)break}}var k=!1;return g===1?i[0]!==e&&(k=i[0]||!1):i[0]!==e&&(k=this.get_consecutive_numbers_index(i,g)),k},g.get_consecutive_numbers_index=function(a,b){var c=a.length,d=[],e=!0,f=-1;for(var g=0;g<c;g++){if(e||a[g]===f+1){d.push(g);if(d.length===b)break;e=!1}else d=[],e=!0;f=a[g]}return d.length>=b?a[d[0]]:!1},g.get_widgets_overlapped=function(){var b,c=a([]),d=[],e=this.cells_occupied_by_player.rows.slice(0);return e.reverse(),a.each(this.cells_occupied_by_player.cols,a.proxy(function(b,f){a.each(e,a.proxy(function(b,e){if(!this.gridmap[f])return!0;var g=this.gridmap[f][e];this.is_occupied(f,e)&&!this.is_player(g)&&a.inArray(g,d)===-1&&(c=c.add(g),d.push(g))},this))},this)),c},g.on_start_overlapping_column=function(a){this.set_player(a,!1)},g.on_start_overlapping_row=function(a){this.set_player(!1,a)},g.on_stop_overlapping_column=function(a){this.set_player();var b=this;this.for_each_widget_below(a,this.cells_occupied_by_player.rows[0],function(a,c){b.move_widget_up(this,b.player_grid_data.size_y)})},g.on_stop_overlapping_row=function(a){this.set_player();var b=this,c=this.cells_occupied_by_player.cols;for(var d=0,e=c.length;d<e;d++)this.for_each_widget_below(c[d],a,function(a,c){b.move_widget_up(this,b.player_grid_data.size_y)})},g.move_widget_to=function(b,c){var d=this,e=b.coords().grid,f=c-e.row,g=this.widgets_below(b),h=this.can_move_to(e,e.col,c,b);return h===!1?!1:(this.remove_from_gridmap(e),e.row=c,this.add_to_gridmap(e),b.attr("data-row",c),this.$changed=this.$changed.add(b),g.each(function(b,c){var e=a(c),f=e.coords().grid,g=d.can_go_widget_up(f);g&&g!==f.row&&d.move_widget_to(e,g)}),this)},g.move_widget_up=function(b,c){var d=b.coords().grid,e=d.row,f=[],g=!0;c||(c=1);if(!this.can_go_up(b))return!1;this.for_each_column_occupied(d,function(d){if(a.inArray(b,f)===-1){var g=b.coords().grid,h=e-c;h=this.can_go_up_to_row(g,d,h);if(!h)return!0;var i=this.widgets_below(b);this.remove_from_gridmap(g),g.row=h,this.add_to_gridmap(g),b.attr("data-row",g.row),this.$changed=this.$changed.add(b),f.push(b),i.each(a.proxy(function(b,d){this.move_widget_up(a(d),c)},this))}})},g.move_widget_down=function(b,c){var d=b.coords().grid,e=d.row,f=[],g=c;if(!b)return!1;if(a.inArray(b,f)===-1){var h=b.coords().grid,i=e+c,j=this.widgets_below(b);this.remove_from_gridmap(h),j.each(a.proxy(function(b,c){var d=a(c),e=d.coords().grid,f=this.displacement_diff(e,h,g);f>0&&this.move_widget_down(d,f)},this)),h.row=i,this.update_widget_position(h,b),b.attr("data-row",h.row),this.$changed=this.$changed.add(b),f.push(b)}},g.can_go_up_to_row=function(b,c,d){var e=this.gridmap,f=!0,g=[],h=b.row,i;this.for_each_column_occupied(b,function(a){var b=e[a];g[a]=[],i=h;while(i--)if(this.is_empty(a,i)&&!this.is_placeholder_in(a,i))g[a].push(i);else break;if(!g[a].length)return f=!1,!0});if(!f)return!1;i=d;for(i=1;i<h;i++){var j=!0;for(var k=0,l=g.length;k<l;k++)g[k]&&a.inArray(i,g[k])===-1&&(j=!1);if(j===!0){f=i;break}}return f},g.displacement_diff=function(a,b,c){var d=a.row,e=[],f=b.row+b.size_y;this.for_each_column_occupied(a,function(a){var b=0;for(var c=f;c<d;c++)this.is_empty(a,c)&&(b=b+1);e.push(b)});var g=Math.max.apply(null,e);return c=c-g,c>0?c:0},g.widgets_below=function(b){var c=a.isPlainObject(b)?b:b.coords().grid,d=this,e=this.gridmap,f=c.row+c.size_y-1,g=a([]);return this.for_each_column_occupied(c,function(b){d.for_each_widget_below(b,f,function(b,c){if(!d.is_player(this)&&a.inArray(this,g)===-1)return g=g.add(this),!0})}),this.sort_by_row_asc(g)},g.set_cells_player_occupies=function(a,b){return this.remove_from_gridmap(this.placeholder_grid_data),this.placeholder_grid_data.col=a,this.placeholder_grid_data.row=b,this.add_to_gridmap(this.placeholder_grid_data,this.$player),this},g.empty_cells_player_occupies=function(){return this.remove_from_gridmap(this.placeholder_grid_data),this},g.can_go_up=function(a){var b=a.coords().grid,c=b.row,d=c-1,e=this.gridmap,f=[],g=!0;return c===1?!1:(this.for_each_column_occupied(b,function(a){if(this.is_occupied(a,d)||this.is_player(a,d)||this.is_placeholder_in(a,d))return g=!1,!0}),g)},g.can_move_to=function(a,b,c){var d=this.gridmap,e=a.el,f={size_y:a.size_y,size_x:a.size_x,col:b,row:c},g=!0,h=b+a.size_x-1;return h>this.cols?!1:(this.for_each_cell_occupied(f,function(b,c){var d=this.is_widget(b,c);d&&(!a.el||d.is(e))&&(g=!1)}),g)},g.get_targeted_columns=function(a){var b=(a||this.player_grid_data.col)+(this.player_grid_data.size_x-1),c=[];for(var d=a;d<=b;d++)c.push(d);return c},g.get_targeted_rows=function(a){var b=(a||this.player_grid_data.row)+(this.player_grid_data.size_y-1),c=[];for(var d=a;d<=b;d++)c.push(d);return c},g.get_cells_occupied=function(a){var b={cols:[],rows:[]},c;arguments[1]instanceof jQuery&&(a=arguments[1].coords().grid);for(c=0;c<a.size_x;c++){var d=a.col+c;b.cols.push(d)}for(c=0;c<a.size_y;c++){var e=a.row+c;b.rows.push(e)}return b},g.for_each_cell_occupied=function(a,b){return this.for_each_column_occupied(a,function(c){this.for_each_row_occupied(a,function(a){b.call(this,c,a)})}),this},g.for_each_column_occupied=function(a,b){for(var c=0;c<a.size_x;c++){var d=a.col+c;b.call(this,d,a)}},g.for_each_row_occupied=function(a,b){for(var c=0;c<a.size_y;c++){var d=a.row+c;b.call(this,d,a)}},g._traversing_widgets=function(b,c,d,e,f){var g=this.gridmap;if(!g[d])return;var h,i,j=b+"/"+c;if(arguments[2]instanceof jQuery){var k=arguments[2].coords().grid;d=k.col,e=k.row,f=arguments[3]}var l=[],m=e,n={"for_each/above":function(){while(m--)if(m>0&&this.is_widget(d,m)&&a.inArray(g[d][m],l)===-1){h=f.call(g[d][m],d,m),l.push(g[d][m]);if(h)break}},"for_each/below":function(){for(m=e+1,i=g[d].length;m<i;m++)if(this.is_widget(d,m)&&a.inArray(g[d][m],l)===-1){h=f.call(g[d][m],d,m),l.push(g[d][m]);if(h)break}}};n[j]&&n[j].call(this)},g.for_each_widget_above=function(a,b,c){return this._traversing_widgets("for_each","above",a,b,c),this},g.for_each_widget_below=function(a,b,c){return this._traversing_widgets("for_each","below",a,b,c),this},g.get_highest_occupied_cell=function(){var a,b=this.gridmap,c=[],d=[];for(var e=b.length-1;e>=1;e--)for(a=b[e].length-1;a>=1;a--)if(this.is_widget(e,a)){c.push(a),d[a]=e;break}var f=Math.max.apply(null,c);return this.highest_occupied_cell={col:d[f],row:f},this.highest_occupied_cell},g.get_widgets_from=function(b,c){var d=this.gridmap,e=a();return b&&(e=e.add(this.$widgets.filter(function(){var c=a(this).attr("data-col");return c==b||c>b}))),c&&(e=e.add(this.$widgets.filter(function(){var b=a(this).attr("data-row");return b==c||b>c}))),e},g.set_dom_grid_height=function(){var a=this.get_highest_occupied_cell().row;return this.$el.css("height",a*this.min_widget_height),this},g.generate_stylesheet=function(b){var c="",d=10,e=6,g=6,h,i;b||(b={}),b.cols||(b.cols=this.cols),b.rows||(b.rows=this.rows),b.namespace||(b.namespace=""),b.widget_base_dimensions||(b.widget_base_dimensions=this.options.widget_base_dimensions),b.widget_margins||(b.widget_margins=this.options.widget_margins),b.min_widget_width=b.widget_margins[0]*2+b.widget_base_dimensions[0],b.min_widget_height=b.widget_margins[1]*2+b.widget_base_dimensions[1];var j=a.param(b);if(a.inArray(j,f.generated_stylesheets)>=0)return!1;f.generated_stylesheets.push(j);for(h=b.cols+d;h>=0;h--)c+=b.namespace+' [data-col="'+(h+1)+'"] { left: '+(h*b.widget_base_dimensions[0]+h*b.widget_margins[0]+(h+1)*b.widget_margins[0])+"px;} ";for(h=b.rows+d;h>=0;h--)c+=b.namespace+' [data-row="'+(h+1)+'"] { top: '+(h*b.widget_base_dimensions[1]+h*b.widget_margins[1]+(h+1)*b.widget_margins[1])+"px;} ";for(var k=1;k<e;k++)c+=b.namespace+' [data-sizey="'+k+'"] { height: '+(k*b.widget_base_dimensions[1]+(k-1)*b.widget_margins[1]*2)+"px;}";for(var l=1;l<g;l++)c+=b.namespace+' [data-sizex="'+l+'"] { width: '+(l*b.widget_base_dimensions[0]+(l-1)*b.widget_margins[0]*2)+"px;}";return this.add_style_tag(c)},g.add_style_tag=function(a){var b=c,d=b.createElement("style");return b.getElementsByTagName("head")[0].appendChild(d),d.setAttribute("type","text/css"),d.styleSheet?d.styleSheet.cssText=a:d.appendChild(c.createTextNode(a)),this},g.generate_faux_grid=function(b,c){this.faux_grid=[],this.gridmap=[];var d,e;for(d=c;d>0;d--){this.gridmap[d]=[];for(e=b;e>0;e--){var f=a({left:this.baseX+(d-1)*this.min_widget_width,top:this.baseY+(e-1)*this.min_widget_height,width:this.min_widget_width,height:this.min_widget_height,col:d,row:e,original_col:d,original_row:e}).coords();this.gridmap[d][e]=!1,this.faux_grid.push(f)}}return this},g.recalculate_faux_grid=function(){var c=this.$wrapper.width();return this.baseX=(a(b).width()-c)/2,this.baseY=this.$wrapper.offset().top,a.each(this.faux_grid,a.proxy(function(a,b){this.faux_grid[a]=b.update({left:this.baseX+(b.data.col-1)*this.min_widget_width,top:this.baseY+(b.data.row-1)*this.min_widget_height})},this)),this},g.get_widgets_from_DOM=function(){return this.$widgets.each(a.proxy(function(b,c){this.register_widget(a(c))},this)),this},g.generate_grid_and_stylesheet=function(){var c=this.$wrapper.width(),d=this.$wrapper.height(),e=Math.floor(c/this.min_widget_width)+this.options.extra_cols,f=Math.floor(d/this.min_widget_height)+this.options.extra_rows,g=this.$widgets.map(function(){return a(this).attr("data-col")}),h=this.$widgets.map(function(){return a(this).attr("data-row")}),i=Math.max.apply(null,g),j=Math.max.apply(null,h);return this.cols=Math.max(i,e,this.options.min_cols),this.rows=Math.max(j,f,this.options.min_rows),this.baseX=(a(b).width()-c)/2,this.baseY=this.$wrapper.offset().top,this.options.autogenerate_stylesheet&&this.generate_stylesheet(),this.generate_faux_grid(this.rows,this.cols)},a.fn.gridster=function(b){return this.each(function(){a(this).data("gridster")||a(this).data("gridster",new f(this,b))})}}(jQuery,window,document);
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this.data("coords",a),a}})(jQuery,window,document),function(a,b,c,d){function f(b,c,d){this.options=a.extend(e,d),this.$element=b,this.last_colliders=[],this.last_colliders_coords=[],typeof c=="string"||c instanceof jQuery?this.$colliders=a(c,this.options.colliders_context).not(this.$element):this.colliders=a(c),this.init()}var e={colliders_context:c.body},g=f.prototype;g.init=function(){this.find_collisions()},g.overlaps=function(a,b){var c=!1,d=!1;if(b.x1>=a.x1&&b.x1<=a.x2||b.x2>=a.x1&&b.x2<=a.x2||a.x1>=b.x1&&a.x2<=b.x2)c=!0;if(b.y1>=a.y1&&b.y1<=a.y2||b.y2>=a.y1&&b.y2<=a.y2||a.y1>=b.y1&&a.y2<=b.y2)d=!0;return c&&d},g.detect_overlapping_region=function(a,b){var c="",d="";return a.y1>b.cy&&a.y1<b.y2&&(c="N"),a.y2>b.y1&&a.y2<b.cy&&(c="S"),a.x1>b.cx&&a.x1<b.x2&&(d="W"),a.x2>b.x1&&a.x2<b.cx&&(d="E"),c+d||"C"},g.calculate_overlapped_area_coords=function(b,c){var d=Math.max(b.x1,c.x1),e=Math.max(b.y1,c.y1),f=Math.min(b.x2,c.x2),g=Math.min(b.y2,c.y2);return a({left:d,top:e,width:f-d,height:g-e}).coords().get()},g.calculate_overlapped_area=function(a){return a.width*a.height},g.manage_colliders_start_stop=function(b,c,d){var e=this.last_colliders_coords;for(var f=0,g=e.length;f<g;f++)a.inArray(e[f],b)===-1&&c.call(this,e[f]);for(var h=0,i=b.length;h<i;h++)a.inArray(b[h],e)===-1&&d.call(this,b[h])},g.find_collisions=function(b){var c=this,d=[],e=[],f=this.colliders||this.$colliders,g=f.length,h=c.$element.coords().update(b||!1).get();while(g--){var i=c.$colliders?a(f[g]):f[g],j=i.isCoords?i:i.coords(),k=j.get(),l=c.overlaps(h,k);if(!l)continue;var m=c.detect_overlapping_region(h,k);if(m==="C"){var n=c.calculate_overlapped_area_coords(h,k),o=c.calculate_overlapped_area(n),p={area:o,area_coords:n,region:m,coords:k,player_coords:h,el:i};c.options.on_overlap.call(this,p),d.push(j),e.push(p)}}return this.manage_colliders_start_stop(d,c.options.on_overlap_stop,c.options.on_overlap_start),this.last_colliders_coords=d,e},g.get_closest_colliders=function(a){var b=this.find_collisions(a),c=100;return b.sort(function(a,b){return a.area<=c?1:a.region==="C"&&b.region==="C"?a.coords.y1<b.coords.y1||a.coords.x1<b.coords.x1?-1:1:a.area<b.area?1:1}),b},a.fn.collision=function(a,b){return new f(this,a,b)}}(jQuery,window,document),function(a,b){a.debounce=function(a,b,c){var d;return function(){var e=this,f=arguments,g=function(){d=null,c||a.apply(e,f)};c&&!d&&a.apply(e,f),clearTimeout(d),d=setTimeout(g,b)}},a.throttle=function(a,b){var c,d,e,f,g,h,i=debounce(function(){g=f=!1},b);return function(){c=this,d=arguments;var j=function(){e=null,g&&a.apply(c,d),i()};return e||(e=setTimeout(j,b)),f?g=!0:h=a.apply(c,d),i(),f=!0,h}}}(window),function(a,b,c,d){function g(b,c){this.options=a.extend({},e,c),this.$container=a(b),this.$dragitems=a(this.options.items,this.$container),this.is_dragging=!1,this.player_min_left=0+this.options.offset_left,this.init()}var e={items:".gs_w",distance:1,limit:!0,offset_left:0},f=a(c.body),h=g.prototype;h.init=function(){this.$container.css("position","relative"),this.enable()},h.get_actual_pos=function(a){var b=a.position();return b},h.get_mouse_pos=function(a){return{left:a.clientX,top:a.clientY}},h.drag_handler=function(b){if(b.which!==1)return!1;var c=this,d=!0;return this.$player=a(b.currentTarget),this.el_init_pos=this.get_actual_pos(this.$player),this.mouse_init_pos=this.get_mouse_pos(b),f.on("mousemove.draggable",function(a){var b=c.get_mouse_pos(a),e=Math.abs(b.left-c.mouse_init_pos.left),f=Math.abs(b.top-c.mouse_init_pos.top);return e>c.options.distance||f>c.options.distance?d?(d=!1,c.on_dragstart.call(c,a),!1):(c.is_dragging==!0&&throttle(c.on_dragmove.call(c,a),130),!1):!1}),!1},h.on_dragstart=function(a){return a.preventDefault(),this.drag_start=!0,this.is_dragging=!0,this.$container_offset=this.$container.offset(),this.options.helper==="clone"?(this.$helper=this.$player.clone().appendTo(this.$container).addClass("helper"),this.helper=!0):this.helper=!1,this.el_init_offset=this.$player.offset(),this.player_width=this.$player.width(),this.player_max_left=this.$container.width()-this.player_width+this.options.offset_left,this.options.start&&this.options.start.call(this.$player,a,{helper:this.helper?this.$helper:this.$player}),!1},h.get_offset=function(a){a.preventDefault();var b=this.get_mouse_pos(a),c=b.left-this.mouse_init_pos.left,d=b.top-this.mouse_init_pos.top,e=this.el_init_offset.left+c-this.$container_offset.left,f=this.el_init_offset.top+d-this.$container_offset.top;return this.options.limit&&(e>this.player_max_left?e=this.player_max_left:e<this.player_min_left&&(e=this.player_min_left)),{left:e,top:f}},h.on_dragmove=function(a){var b=this.get_offset(a);(this.helper?this.$helper:this.$player).css({position:"absolute",left:b.left,top:b.top});var c={position:{left:b.left,top:b.top}};return this.options.drag&&this.options.drag.call(this.$player,a,c),!1},h.on_dragstop=function(a){var b=this.get_offset(a);this.drag_start=!1;var c={position:{left:b.left,top:b.top}};return this.options.stop&&this.options.stop.call(this.$player,a,c),this.helper&&this.$helper.remove(),!1},h.enable=function(){this.$container.on("mousedown.draggable",this.options.items,a.proxy(this.drag_handler,this)),f.on("mouseup.draggable",a.proxy(function(a){this.is_dragging=!1,f.off("mousemove.draggable"),this.drag_start&&this.on_dragstop(a)},this))},h.disable=function(){this.$container.off("mousedown.draggable"),f.off("mouseup.draggable")},h.destroy=function(){this.disable(),a.removeData(this.$container,"draggable")},a.fn.draggable=function(b){return this.each(function(){a.data(this,"draggable")||a.data(this,"draggable",new g(this,b))})}}(jQuery,window,document),function(a,b,c,d){function f(b,c){this.options=a.extend(!0,e,c),this.$el=a(b),this.$wrapper=this.$el.parent(),this.$widgets=a(this.options.widget_selector,this.$el).addClass("gs_w"),this.widgets=[],this.$changed=a([]),this.wrapper_width=this.$wrapper.width(),this.min_widget_width=this.options.widget_margins[0]*2+this.options.widget_base_dimensions[0],this.min_widget_height=this.options.widget_margins[1]*2+this.options.widget_base_dimensions[1],this.init()}var e={widget_selector:"> li",widget_margins:[10,10],widget_base_dimensions:[400,225],extra_rows:0,extra_cols:0,min_cols:1,min_rows:15,autogenerate_stylesheet:!0,avoid_overlapped_widgets:!0,serialize_params:function(a,b){return{col:b.col,row:b.row}},collision:{},draggable:{distance:4}};f.generated_stylesheets=[];var g=f.prototype;g.init=function(){this.generate_grid_and_stylesheet(),this.get_widgets_from_DOM(),this.set_dom_grid_height(),this.$wrapper.addClass("ready"),this.draggable(),a(b).bind("resize",throttle(a.proxy(this.recalculate_faux_grid,this),200))},g.disable=function(){return this.$wrapper.find(".player-revert").removeClass("player-revert"),this.drag_api.disable(),this},g.enable=function(){return this.drag_api.enable(),this},g.add_widget=function(b,c,d){var e=this.next_position(c,d),f=a(b).attr({"data-col":e.col,"data-row":e.row,"data-sizex":e.size_x,"data-sizey":e.size_y}).addClass("gs_w").appendTo(this.$el).hide();return this.$widgets=this.$widgets.add(f),this.register_widget(f),this.set_dom_grid_height(),f.fadeIn()},g.next_position=function(a,b){a||(a=1),b||(b=1);var c=this.gridmap,d=c.length,e=[];for(var f=1;f<d;f++){var g=c[f].length;for(var h=1;h<=g;h++){var i=this.can_move_to({size_x:a,size_y:b},f,h);i&&e.push({col:f,row:h,size_y:b,size_x:a})}}return e.length?this.sort_by_row_and_col_asc(e)[0]:!1},g.remove_widget=function(b,c){var d=b instanceof jQuery?b:a(b),e=d.coords().grid;this.cells_occupied_by_placeholder={},this.$widgets=this.$widgets.not(d);var f=this.widgets_below(d);this.remove_from_gridmap(e),d.fadeOut(a.proxy(function(){d.remove(),f.each(a.proxy(function(b,c){this.move_widget_up(a(c),e.size_y)},this)),c&&c.apply(this,b)},this))},g.serialize=function(b){b||(b=this.$widgets);var c=[];return b.each(a.proxy(function(b,d){c.push(this.options.serialize_params(a(d),a(d).coords().grid))},this)),c},g.serialize_changed=function(){return this.serialize(this.$changed)},g.register_widget=function(a){var b={col:parseInt(a.attr("data-col"),10),row:parseInt(a.attr("data-row"),10),size_x:parseInt(a.attr("data-sizex"),10),size_y:parseInt(a.attr("data-sizey"),10),el:a};return this.options.avoid_overlapped_widgets&&!this.can_move_to({size_x:b.size_x,size_y:b.size_y},b.col,b.row)&&(b=this.next_position(b.size_x,b.size_y),b.el=a,a.attr({"data-col":b.col,"data-row":b.row,"data-sizex":b.size_x,"data-sizey":b.size_y})),a.data("coords",a.coords()),a.data("coords").grid=b,this.add_to_gridmap(b,a),this.widgets.push(a),this},g.update_widget_position=function(a,b){return this.for_each_cell_occupied(a,function(a,c){if(!this.gridmap[a])return this;this.gridmap[a][c]=b}),this},g.remove_from_gridmap=function(a){return this.update_widget_position(a,!1)},g.add_to_gridmap=function(b,c){this.update_widget_position(b,c||b.el);if(b.el){var d=this.widgets_below(b.el);d.each(a.proxy(function(b,c){this.move_widget_up(a(c))},this))}},g.draggable=function(){var b=this,c=a.extend(!0,{},this.options.draggable,{offset_left:this.options.widget_margins[0],items:".gs_w",start:function(c,d){b.$widgets.filter(".player-revert").removeClass("player-revert"),b.$player=a(this),b.$helper=b.options.draggable.helper==="clone"?a(d.helper):b.$player,b.helper=!b.$helper.is(b.$player),b.on_start_drag.call(b,c,d),b.$el.trigger("gridster:dragstart")},stop:function(a,c){b.on_stop_drag.call(b,a,c),b.$el.trigger("gridster:dragstop")},drag:function(a,c){b.on_drag.call(b,a,c),b.$el.trigger("gridster:drag")}});return this.drag_api=this.$el.draggable(c).data("draggable"),this},g.on_start_drag=function(b,c){this.$helper.add(this.$player).add(this.$wrapper).addClass("dragging"),this.$player.addClass("player"),this.player_grid_data=this.$player.coords().grid,this.placeholder_grid_data=a.extend({},this.player_grid_data),this.$el.css("height",this.$el.height()+this.player_grid_data.size_y*this.min_widget_height);var d=this.faux_grid,e=this.$player.data("coords").coords;this.cells_occupied_by_player=this.get_cells_occupied(this.player_grid_data),this.cells_occupied_by_placeholder=this.get_cells_occupied(this.placeholder_grid_data),this.last_cols=[],this.last_rows=[],this.collision_api=this.$helper.collision(d,this.options.collision),this.$preview_holder=a("<li />",{"class":"preview-holder","data-row":this.$player.attr("data-row"),"data-col":this.$player.attr("data-col"),css:{width:e.width,height:e.height}}).appendTo(this.$el),this.options.draggable.start&&this.options.draggable.start.call(this,b,c)},g.on_drag=function(a,b){var c={left:b.position.left+this.baseX,top:b.position.top+this.baseY};this.colliders_data=this.collision_api.get_closest_colliders(c),this.on_overlapped_column_change(this.on_start_overlapping_column,this.on_stop_overlapping_column),this.on_overlapped_row_change(this.on_start_overlapping_row,this.on_stop_overlapping_row),this.helper&&this.$player&&this.$player.css({left:b.position.left,top:b.position.top}),this.options.draggable.drag&&this.options.draggable.drag.call(this,a,b)},g.on_stop_drag=function(a,b){this.$helper.add(this.$player).add(this.$wrapper).removeClass("dragging"),b.position.left=b.position.left+this.baseX,b.position.top=b.position.top+this.baseY,this.colliders_data=this.collision_api.get_closest_colliders(b.position),this.on_overlapped_column_change(this.on_start_overlapping_column,this.on_stop_overlapping_column),this.on_overlapped_row_change(this.on_start_overlapping_row,this.on_stop_overlapping_row),this.$player.addClass("player-revert").removeClass("player").attr({"data-col":this.placeholder_grid_data.col,"data-row":this.placeholder_grid_data.row}).css({left:"",top:""}),this.$changed=this.$changed.add(this.$player),this.cells_occupied_by_player=this.get_cells_occupied(this.placeholder_grid_data),this.set_cells_player_occupies(this.placeholder_grid_data.col,this.placeholder_grid_data.row),this.$player.coords().grid.row=this.placeholder_grid_data.row,this.$player.coords().grid.col=this.placeholder_grid_data.col,this.$player=null,this.$preview_holder.remove(),this.set_dom_grid_height(),this.options.draggable.stop&&this.options.draggable.stop.call(this,a,b)},g.on_overlapped_column_change=function(b,c){if(!this.colliders_data.length)return;var d=this.get_targeted_columns(this.colliders_data[0].el.data.col),e=this.last_cols.length,f=d.length,g;for(g=0;g<f;g++)a.inArray(d[g],this.last_cols)===-1&&(b||a.noop).call(this,d[g]);for(g=0;g<e;g++)a.inArray(this.last_cols[g],d)===-1&&(c||a.noop).call(this,this.last_cols[g]);return this.last_cols=d,this},g.on_overlapped_row_change=function(b,c){if(!this.colliders_data.length)return;var d=this.get_targeted_rows(this.colliders_data[0].el.data.row),e=this.last_rows.length,f=d.length,g;for(g=0;g<f;g++)a.inArray(d[g],this.last_rows)===-1&&(b||a.noop).call(this,d[g]);for(g=0;g<e;g++)a.inArray(this.last_rows[g],d)===-1&&(c||a.noop).call(this,this.last_rows[g]);this.last_rows=d},g.set_player=function(a,b){this.empty_cells_player_occupies();var c=this,d=c.colliders_data[0].el.data,e=d.col,f=b||d.row;this.player_grid_data={col:e,row:f,size_y:this.player_grid_data.size_y,size_x:this.player_grid_data.size_x},this.cells_occupied_by_player=this.get_cells_occupied(this.player_grid_data);var g=this.get_widgets_overlapped(this.player_grid_data),h=this.widgets_constraints(g);this.manage_movements(h.can_go_up,e,f),this.manage_movements(h.can_not_go_up,e,f);if(!g.length){var i=this.can_go_player_up(this.player_grid_data);i!==!1&&(f=i),this.set_placeholder(e,f)}return{col:e,row:f}},g.widgets_constraints=function(b){var c=a([]),d,e=[],f=[];return b.each(a.proxy(function(b,d){var g=a(d),h=g.coords().grid;this.can_go_widget_up(h)?(c=c.add(g),e.push(h)):f.push(h)},this)),d=b.not(c),{can_go_up:this.sort_by_row_asc(e),can_not_go_up:this.sort_by_row_desc(f)}},g.sort_by_row_asc=function(a){return a=a.sort(function(a,b){return a.row>b.row?1:-1}),a},g.sort_by_row_and_col_asc=function(a){return a=a.sort(function(a,b){return a.row>b.row||a.row==b.row&&a.col>b.col?1:-1}),a},g.sort_by_col_asc=function(a){return a=a.sort(function(a,b){return a.col>b.col?1:-1}),a},g.sort_by_row_desc=function(a){return a=a.sort(function(a,b){return a.row+a.size_y<b.row+b.size_y?1:-1}),a},g.manage_movements=function(b,c,d){return a.each(b,a.proxy(function(a,b){var e=b,f=e.el,g=this.can_go_widget_up(e);if(g)this.move_widget_to(f,g),this.set_placeholder(c,g+e.size_y);else{var h=this.can_go_player_up(this.player_grid_data);if(!h){var i=d+this.player_grid_data.size_y-e.row;this.move_widget_down(f,i),this.set_placeholder(c,d)}}},this)),this},g.is_player=function(a,b){if(b&&!this.gridmap[a])return!1;var c=b?this.gridmap[a][b]:a;return c&&(c.is(this.$player)||c.is(this.$helper))},g.is_player_in=function(b,c){var d=this.cells_occupied_by_player;return a.inArray(b,d.cols)>=0&&a.inArray(c,d.rows)>=0},g.is_placeholder_in=function(b,c){var d=this.cells_occupied_by_placeholder||{};return this.is_placeholder_in_col(b)&&a.inArray(c,d.rows)>=0},g.is_placeholder_in_col=function(b){var c=this.cells_occupied_by_placeholder||[];return a.inArray(b,c.cols)>=0},g.is_empty=function(a,b){return typeof this.gridmap[a]!="undefined"&&typeof this.gridmap[a][b]!="undefined"&&this.gridmap[a][b]===!1?!0:!1},g.is_occupied=function(a,b){return this.gridmap[a]?this.gridmap[a][b]?!0:!1:!1},g.is_widget=function(a,b){var c=this.gridmap[a];return c?(c=c[b],c?c:!1):!1},g.is_widget_under_player=function(a,b){return this.is_widget(a,b)?this.is_player_in(a,b):!1},g.get_widgets_under_player=function(){var b=this.cells_occupied_by_player,c=a([]);return a.each(b.cols,a.proxy(function(d,e){a.each(b.rows,a.proxy(function(a,b){this.is_widget(e,b)&&(c=c.add(this.gridmap[e][b]))},this))},this)),c},g.set_placeholder=function(b,c){var d=a.extend({},this.placeholder_grid_data),e=this.widgets_below({col:d.col,row:d.row,size_y:d.size_y,size_x:d.size_x}),f=b+d.size_x-1;f>this.cols&&(b=b-(f-b));var g=this.placeholder_grid_data.row<c,h=this.placeholder_grid_data.col!==b;this.placeholder_grid_data.col=b,this.placeholder_grid_data.row=c,this.cells_occupied_by_placeholder=this.get_cells_occupied(this.placeholder_grid_data),this.$preview_holder.attr({"data-row":c,"data-col":b}),(g||h)&&e.each(a.proxy(function(c,e){this.move_widget_up(a(e),this.placeholder_grid_data.col-b+d.size_y)},this))},g.can_go_player_up=function(a){var b=a.row+a.size_y-1,c=!0,d=[],e=1e4,f=this.get_widgets_under_player();return this.for_each_column_occupied(a,function(a){var g=this.gridmap[a],h=b+1;d[a]=[];while(--h>0)if(this.is_empty(a,h)||this.is_player(a,h)||this.is_widget(a,h)&&g[h].is(f))d[a].push(h),e=h<e?h:e;else break;if(d[a].length===0)return c=!1,!0;d[a].sort()}),c?this.get_valid_rows(a,d,e):!1},g.can_go_widget_up=function(a){var b=a.row+a.size_y-1,c=!0,d=[],e=1e4;return this.for_each_column_occupied(a,function(a){var f=this.gridmap[a];d[a]=[];var g=b+1;while(--g>0){if(this.is_occupied(a,g)&&!this.is_player(a,g))break;!this.is_player(a,g)&&!this.is_placeholder_in(a,g)&&d[a].push(g),g<e&&(e=g)}if(d[a].length===0)return c=!1,!0;d[a].sort()}),c?this.get_valid_rows(a,d,e):!1},g.get_valid_rows=function(b,c,d){var e=b.row,f=b.row+b.size_y-1,g=b.size_y,h=d-1,i=[];while(++h<=f){var j=!0;a.each(c,function(b,c){c&&a.inArray(h,c)===-1&&(j=!1)});if(j===!0){i.push(h);if(i.length===g)break}}var k=!1;return g===1?i[0]!==e&&(k=i[0]||!1):i[0]!==e&&(k=this.get_consecutive_numbers_index(i,g)),k},g.get_consecutive_numbers_index=function(a,b){var c=a.length,d=[],e=!0,f=-1;for(var g=0;g<c;g++){if(e||a[g]===f+1){d.push(g);if(d.length===b)break;e=!1}else d=[],e=!0;f=a[g]}return d.length>=b?a[d[0]]:!1},g.get_widgets_overlapped=function(){var b,c=a([]),d=[],e=this.cells_occupied_by_player.rows.slice(0);return e.reverse(),a.each(this.cells_occupied_by_player.cols,a.proxy(function(b,f){a.each(e,a.proxy(function(b,e){if(!this.gridmap[f])return!0;var g=this.gridmap[f][e];this.is_occupied(f,e)&&!this.is_player(g)&&a.inArray(g,d)===-1&&(c=c.add(g),d.push(g))},this))},this)),c},g.on_start_overlapping_column=function(a){this.set_player(a,!1)},g.on_start_overlapping_row=function(a){this.set_player(!1,a)},g.on_stop_overlapping_column=function(a){this.set_player();var b=this;this.for_each_widget_below(a,this.cells_occupied_by_player.rows[0],function(a,c){b.move_widget_up(this,b.player_grid_data.size_y)})},g.on_stop_overlapping_row=function(a){this.set_player();var b=this,c=this.cells_occupied_by_player.cols;for(var d=0,e=c.length;d<e;d++)this.for_each_widget_below(c[d],a,function(a,c){b.move_widget_up(this,b.player_grid_data.size_y)})},g.move_widget_to=function(b,c){var d=this,e=b.coords().grid,f=c-e.row,g=this.widgets_below(b),h=this.can_move_to(e,e.col,c,b);return h===!1?!1:(this.remove_from_gridmap(e),e.row=c,this.add_to_gridmap(e),b.attr("data-row",c),this.$changed=this.$changed.add(b),g.each(function(b,c){var e=a(c),f=e.coords().grid,g=d.can_go_widget_up(f);g&&g!==f.row&&d.move_widget_to(e,g)}),this)},g.move_widget_up=function(b,c){var d=b.coords().grid,e=d.row,f=[],g=!0;c||(c=1);if(!this.can_go_up(b))return!1;this.for_each_column_occupied(d,function(d){if(a.inArray(b,f)===-1){var g=b.coords().grid,h=e-c;h=this.can_go_up_to_row(g,d,h);if(!h)return!0;var i=this.widgets_below(b);this.remove_from_gridmap(g),g.row=h,this.add_to_gridmap(g),b.attr("data-row",g.row),this.$changed=this.$changed.add(b),f.push(b),i.each(a.proxy(function(b,d){this.move_widget_up(a(d),c)},this))}})},g.move_widget_down=function(b,c){var d=b.coords().grid,e=d.row,f=[],g=c;if(!b)return!1;if(a.inArray(b,f)===-1){var h=b.coords().grid,i=e+c,j=this.widgets_below(b);this.remove_from_gridmap(h),j.each(a.proxy(function(b,c){var d=a(c),e=d.coords().grid,f=this.displacement_diff(e,h,g);f>0&&this.move_widget_down(d,f)},this)),h.row=i,this.update_widget_position(h,b),b.attr("data-row",h.row),this.$changed=this.$changed.add(b),f.push(b)}},g.can_go_up_to_row=function(b,c,d){var e=this.gridmap,f=!0,g=[],h=b.row,i;this.for_each_column_occupied(b,function(a){var b=e[a];g[a]=[],i=h;while(i--)if(this.is_empty(a,i)&&!this.is_placeholder_in(a,i))g[a].push(i);else break;if(!g[a].length)return f=!1,!0});if(!f)return!1;i=d;for(i=1;i<h;i++){var j=!0;for(var k=0,l=g.length;k<l;k++)g[k]&&a.inArray(i,g[k])===-1&&(j=!1);if(j===!0){f=i;break}}return f},g.displacement_diff=function(a,b,c){var d=a.row,e=[],f=b.row+b.size_y;this.for_each_column_occupied(a,function(a){var b=0;for(var c=f;c<d;c++)this.is_empty(a,c)&&(b=b+1);e.push(b)});var g=Math.max.apply(null,e);return c=c-g,c>0?c:0},g.widgets_below=function(b){var c=a.isPlainObject(b)?b:b.coords().grid,d=this,e=this.gridmap,f=c.row+c.size_y-1,g=a([]);return this.for_each_column_occupied(c,function(b){d.for_each_widget_below(b,f,function(b,c){if(!d.is_player(this)&&a.inArray(this,g)===-1)return g=g.add(this),!0})}),this.sort_by_row_asc(g)},g.set_cells_player_occupies=function(a,b){return this.remove_from_gridmap(this.placeholder_grid_data),this.placeholder_grid_data.col=a,this.placeholder_grid_data.row=b,this.add_to_gridmap(this.placeholder_grid_data,this.$player),this},g.empty_cells_player_occupies=function(){return this.remove_from_gridmap(this.placeholder_grid_data),this},g.can_go_up=function(a){var b=a.coords().grid,c=b.row,d=c-1,e=this.gridmap,f=[],g=!0;return c===1?!1:(this.for_each_column_occupied(b,function(a){var b=this.is_widget(a,d);if(this.is_occupied(a,d)||this.is_player(a,d)||this.is_placeholder_in(a,d))return g=!1,!0}),g)},g.can_move_to=function(a,b,c){var d=this.gridmap,e=a.el,f={size_y:a.size_y,size_x:a.size_x,col:b,row:c},g=!0,h=b+a.size_x-1;return h>this.cols?!1:(this.for_each_cell_occupied(f,function(b,c){var d=this.is_widget(b,c);d&&(!a.el||d.is(e))&&(g=!1)}),g)},g.get_targeted_columns=function(a){var b=(a||this.player_grid_data.col)+(this.player_grid_data.size_x-1),c=[];for(var d=a;d<=b;d++)c.push(d);return c},g.get_targeted_rows=function(a){var b=(a||this.player_grid_data.row)+(this.player_grid_data.size_y-1),c=[];for(var d=a;d<=b;d++)c.push(d);return c},g.get_cells_occupied=function(a){var b={cols:[],rows:[]},c;arguments[1]instanceof jQuery&&(a=arguments[1].coords().grid);for(c=0;c<a.size_x;c++){var d=a.col+c;b.cols.push(d)}for(c=0;c<a.size_y;c++){var e=a.row+c;b.rows.push(e)}return b},g.for_each_cell_occupied=function(a,b){return this.for_each_column_occupied(a,function(c){this.for_each_row_occupied(a,function(a){b.call(this,c,a)})}),this},g.for_each_column_occupied=function(a,b){for(var c=0;c<a.size_x;c++){var d=a.col+c;b.call(this,d,a)}},g.for_each_row_occupied=function(a,b){for(var c=0;c<a.size_y;c++){var d=a.row+c;b.call(this,d,a)}},g._traversing_widgets=function(b,c,d,e,f){var g=this.gridmap;if(!g[d])return;var h,i,j=b+"/"+c;if(arguments[2]instanceof jQuery){var k=arguments[2].coords().grid;d=k.col,e=k.row,f=arguments[3]}var l=[],m=e,n={"for_each/above":function(){while(m--)if(m>0&&this.is_widget(d,m)&&a.inArray(g[d][m],l)===-1){h=f.call(g[d][m],d,m),l.push(g[d][m]);if(h)break}},"for_each/below":function(){for(m=e+1,i=g[d].length;m<i;m++)if(this.is_widget(d,m)&&a.inArray(g[d][m],l)===-1){h=f.call(g[d][m],d,m),l.push(g[d][m]);if(h)break}}};n[j]&&n[j].call(this)},g.for_each_widget_above=function(a,b,c){return this._traversing_widgets("for_each","above",a,b,c),this},g.for_each_widget_below=function(a,b,c){return this._traversing_widgets("for_each","below",a,b,c),this},g.get_highest_occupied_cell=function(){var a,b=this.gridmap,c=[],d=[];for(var e=b.length-1;e>=1;e--)for(a=b[e].length-1;a>=1;a--)if(this.is_widget(e,a)){c.push(a),d[a]=e;break}var f=Math.max.apply(null,c);return this.highest_occupied_cell={col:d[f],row:f},this.highest_occupied_cell},g.get_widgets_from=function(b,c){var d=this.gridmap,e=a();return b&&(e=e.add(this.$widgets.filter(function(){var c=a(this).attr("data-col");return c==b||c>b}))),c&&(e=e.add(this.$widgets.filter(function(){var b=a(this).attr("data-row");return b==c||b>c}))),e},g.set_dom_grid_height=function(){var a=this.get_highest_occupied_cell().row;return this.$el.css("height",a*this.min_widget_height),this},g.generate_stylesheet=function(b){var c="",d=10,e=6,g=6,h,i;b||(b={}),b.cols||(b.cols=this.cols),b.rows||(b.rows=this.rows),b.namespace||(b.namespace=""),b.widget_base_dimensions||(b.widget_base_dimensions=this.options.widget_base_dimensions),b.widget_margins||(b.widget_margins=this.options.widget_margins),b.min_widget_width=b.widget_margins[0]*2+b.widget_base_dimensions[0],b.min_widget_height=b.widget_margins[1]*2+b.widget_base_dimensions[1];var j=a.param(b);if(a.inArray(j,f.generated_stylesheets)>=0)return!1;f.generated_stylesheets.push(j);for(h=b.cols+d;h>=0;h--)c+=b.namespace+' [data-col="'+(h+1)+'"] { left:'+(h*b.widget_base_dimensions[0]+h*b.widget_margins[0]+(h+1)*b.widget_margins[0])+"px;} ";for(h=b.rows+d;h>=0;h--)c+=b.namespace+' [data-row="'+(h+1)+'"] { top:'+(h*b.widget_base_dimensions[1]+h*b.widget_margins[1]+(h+1)*b.widget_margins[1])+"px;} ";for(var k=1;k<e;k++)c+=b.namespace+' [data-sizey="'+k+'"] { height:'+(k*b.widget_base_dimensions[1]+(k-1)*b.widget_margins[1]*2)+"px;}";for(var l=1;l<g;l++)c+=b.namespace+' [data-sizex="'+l+'"] { width:'+(l*b.widget_base_dimensions[0]+(l-1)*b.widget_margins[0]*2)+"px;}";return this.add_style_tag(c)},g.add_style_tag=function(a){var b=c,d=b.createElement("style");return b.getElementsByTagName("head")[0].appendChild(d),d.setAttribute("type","text/css"),d.styleSheet?d.styleSheet.cssText=a:d.appendChild(c.createTextNode(a)),this},g.generate_faux_grid=function(b,c){this.faux_grid=[],this.gridmap=[];var d,e;for(d=c;d>0;d--){this.gridmap[d]=[];for(e=b;e>0;e--){var f=a({left:this.baseX+(d-1)*this.min_widget_width,top:this.baseY+(e-1)*this.min_widget_height,width:this.min_widget_width,height:this.min_widget_height,col:d,row:e,original_col:d,original_row:e}).coords();this.gridmap[d][e]=!1,this.faux_grid.push(f)}}return this},g.recalculate_faux_grid=function(){var c=this.$wrapper.width();return this.baseX=(a(b).width()-c)/2,this.baseY=this.$wrapper.offset().top,a.each(this.faux_grid,a.proxy(function(a,b){this.faux_grid[a]=b.update({left:this.baseX+(b.data.col-1)*this.min_widget_width,top:this.baseY+(b.data.row-1)*this.min_widget_height})},this)),this},g.get_widgets_from_DOM=function(){return this.$widgets.each(a.proxy(function(b,c){this.register_widget(a(c))},this)),this},g.generate_grid_and_stylesheet=function(){var c=this.$wrapper.width(),d=this.$wrapper.height(),e=Math.floor(c/this.min_widget_width)+this.options.extra_cols,f=Math.floor(d/this.min_widget_height)+this.options.extra_rows,g=this.$widgets.map(function(){return a(this).attr("data-col")}),h=this.$widgets.map(function(){return a(this).attr("data-row")}),i=Math.max.apply(null,g),j=Math.max.apply(null,h);return this.cols=Math.max(i,e,this.options.min_cols),this.rows=Math.max(j,f,this.options.min_rows),this.baseX=(a(b).width()-c)/2,this.baseY=this.$wrapper.offset().top,this.options.autogenerate_stylesheet&&this.generate_stylesheet(),this.generate_faux_grid(this.rows,this.cols)},a.fn.gridster=function(b){return this.each(function(){a(this).data("gridster")||a(this).data("gridster",new f(this,b))})}}(jQuery,window,document);
\ No newline at end of file
diff --git a/docs/api.js b/docs/api.js
index 8b7efa7acb..47d6d2545a 100644
--- a/docs/api.js
+++ b/docs/api.js
@@ -1,8 +1,8 @@
 YUI.add("yuidoc-meta", function(Y) {
    Y.YUIDoc = { meta: {
     "classes": [
-        "Collision",
-        "Coords",
+        "Collision\n\nDetects collisions between a DOM element against other DOM elements or\nCoords objects.",
+        "Coords\n\nCreates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)\nto simulate DOM elements on the screen.\nCoords is used by Gridster to create a faux grid with any DOM element can\ncollide.",
         "Draggable",
         "Gridster"
     ],
diff --git a/docs/classes/Collision.html "b/docs/classes/Collision\n\nDetects collisions between a DOM element against other DOM elements or\nCoords objects..html"
similarity index 80%
rename from docs/classes/Collision.html
rename to "docs/classes/Collision\n\nDetects collisions between a DOM element against other DOM elements or\nCoords objects..html"
index 74c25d5b5d..7b89b6fc6c 100644
--- a/docs/classes/Collision.html
+++ "b/docs/classes/Collision\n\nDetects collisions between a DOM element against other DOM elements or\nCoords objects..html"	
@@ -2,7 +2,10 @@
 <html lang="en">
 <head>
     <meta charset="utf-8">
-    <title>Collision</title>
+    <title>Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</title>
     <link rel="stylesheet" href="http:&#x2F;&#x2F;yui.yahooapis.com&#x2F;3.5.1&#x2F;build&#x2F;cssgrids&#x2F;cssgrids-min.css">
     <link rel="stylesheet" href="..&#x2F;assets/vendor/prettify/prettify-min.css">
     <link rel="stylesheet" href="..&#x2F;assets/css/main.css" id="site_styles">
@@ -42,9 +45,25 @@
         <div id="api-tabview-panel">
             <ul id="api-classes" class="apis classes">
             
-                <li><a href="..&#x2F;classes/Collision.html">Collision</a></li>
+                <li><a href="..&#x2F;classes/Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects..html">Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</a></li>
             
-                <li><a href="..&#x2F;classes/Coords.html">Coords</a></li>
+                <li><a href="..&#x2F;classes/Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide..html">Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</a></li>
             
                 <li><a href="..&#x2F;classes/Draggable.html">Draggable</a></li>
             
@@ -89,7 +108,10 @@
             <div class="apidocs">
                 <div id="docs-main">
                     <div class="content">
-                        <h1>Collision Class</h1>
+                        <h1>Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects. Class</h1>
 <div class="box meta">
     
         <div class="uses">
@@ -106,7 +128,7 @@
 
     
         <div class="foundat">
-            Defined in: <a href="..&#x2F;files&#x2F;src_jquery.collision.js.html#l22"><code>src&#x2F;jquery.collision.js:22</code></a>
+            Defined in: <a href="..&#x2F;files&#x2F;src_jquery.collision.js.html#l19"><code>src&#x2F;jquery.collision.js:19</code></a>
         </div>
     
 
@@ -118,14 +140,20 @@
 
 
 <div class="box intro">
-    <p>Collision</p>
+    
 </div>
 
 
     <div class="constructor">
         <h2>Constructor</h2>
-        <div id="method_Collision" class="method item">
-    <h3 class="name"><code>Collision</code></h3>
+        <div id="method_Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects." class="method item">
+    <h3 class="name"><code>Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</code></h3>
 
     
         <div class="args">
@@ -133,7 +161,7 @@
             
                 <li class="arg">
                     
-                        <code>element</code>
+                        <code>el</code>
                     
                 </li>
             
@@ -182,7 +210,7 @@
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.collision.js.html#l22"><code>src&#x2F;jquery.collision.js:22</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.collision.js.html#l19"><code>src&#x2F;jquery.collision.js:19</code></a>
         
         </p>
 
@@ -204,14 +232,14 @@
             
                 <li class="param">
                     
-                        <code class="param-name">element</code>
+                        <code class="param-name">el</code>
                         <span class="type">HTMLElement</span>
                     
 
                     
 
                     <div class="param-description">
-                        <p>An Attribute name or object property path</p>
+                        <p>The jQuery wrapped HTMLElement.</p>
                     </div>
 
                     
@@ -220,13 +248,14 @@
                 <li class="param">
                     
                         <code class="param-name">colliders</code>
-                        <span class="type">String | HTMLElement | Array</span>
+                        <span class="type">HTMLElement | Array</span>
                     
 
                     
 
                     <div class="param-description">
-                        <p>An Attribute name or object property path</p>
+                        <p>Can be a jQuery collection
+ of HTMLElements or an Array of Coords instances.</p>
                     </div>
 
                     
@@ -242,26 +271,13 @@
                     
 
                     <div class="param-description">
-                        <p>An Attribute name or object property path</p>
+                        <p>An Object with all options you want to
+       overwrite:</p>
                     </div>
 
                     
                         <ul class="params-list">
                             
-                            <li class="param">
-                                
-                                    <code class="param-name optional">[on_overlap]</code>
-                                    <span class="type">Function</span>
-                                    <span class="flag optional" title="This parameter is optional.">optional</span>
-                                
-
-                                <div class="param-description">
-                                    <p>An Attribute name or object property path</p>
-                                </div>
-
-                                
-                            </li>
-                            
                             <li class="param">
                                 
                                     <code class="param-name optional">[on_overlap_start]</code>
@@ -270,7 +286,8 @@
                                 
 
                                 <div class="param-description">
-                                    <p>An Attribute name or object property path</p>
+                                    <p>Executes a function the first
+   time each <code>collider</code> is overlapped.</p>
                                 </div>
 
                                 
@@ -284,7 +301,23 @@
                                 
 
                                 <div class="param-description">
-                                    <p>An Attribute name or object property path</p>
+                                    <p>Executes a function when a
+   <code>collider</code> is no longer collided.</p>
+                                </div>
+
+                                
+                            </li>
+                            
+                            <li class="param">
+                                
+                                    <code class="param-name optional">[on_overlap]</code>
+                                    <span class="type">Function</span>
+                                    <span class="flag optional" title="This parameter is optional.">optional</span>
+                                
+
+                                <div class="param-description">
+                                    <p>Executes a function when the
+mouse is moved during the collision.</p>
                                 </div>
 
                                 
@@ -307,7 +340,7 @@
                     
                         <span class="type">Object</span>:
                     
-                    dasdasdadasd
+                    Collision instance.
                 
             </div>
         </div>
diff --git a/docs/classes/Coords.html "b/docs/classes/Coords\n\nCreates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)\nto simulate DOM elements on the screen.\nCoords is used by Gridster to create a faux grid with any DOM element can\ncollide..html"
similarity index 71%
rename from docs/classes/Coords.html
rename to "docs/classes/Coords\n\nCreates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)\nto simulate DOM elements on the screen.\nCoords is used by Gridster to create a faux grid with any DOM element can\ncollide..html"
index 603259dcf0..eace6a44b7 100644
--- a/docs/classes/Coords.html
+++ "b/docs/classes/Coords\n\nCreates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)\nto simulate DOM elements on the screen.\nCoords is used by Gridster to create a faux grid with any DOM element can\ncollide..html"	
@@ -2,7 +2,12 @@
 <html lang="en">
 <head>
     <meta charset="utf-8">
-    <title>Coords</title>
+    <title>Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</title>
     <link rel="stylesheet" href="http:&#x2F;&#x2F;yui.yahooapis.com&#x2F;3.5.1&#x2F;build&#x2F;cssgrids&#x2F;cssgrids-min.css">
     <link rel="stylesheet" href="..&#x2F;assets/vendor/prettify/prettify-min.css">
     <link rel="stylesheet" href="..&#x2F;assets/css/main.css" id="site_styles">
@@ -42,9 +47,25 @@
         <div id="api-tabview-panel">
             <ul id="api-classes" class="apis classes">
             
-                <li><a href="..&#x2F;classes/Collision.html">Collision</a></li>
+                <li><a href="..&#x2F;classes/Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects..html">Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</a></li>
             
-                <li><a href="..&#x2F;classes/Coords.html">Coords</a></li>
+                <li><a href="..&#x2F;classes/Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide..html">Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</a></li>
             
                 <li><a href="..&#x2F;classes/Draggable.html">Draggable</a></li>
             
@@ -89,7 +110,12 @@
             <div class="apidocs">
                 <div id="docs-main">
                     <div class="content">
-                        <h1>Coords Class</h1>
+                        <h1>Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide. Class</h1>
 <div class="box meta">
     
 
@@ -109,14 +135,24 @@
 
 
 <div class="box intro">
-    <p>Coords</p>
+    
 </div>
 
 
     <div class="constructor">
         <h2>Constructor</h2>
-        <div id="method_Coords" class="method item">
-    <h3 class="name"><code>Coords</code></h3>
+        <div id="method_Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide." class="method item">
+    <h3 class="name"><code>Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</code></h3>
 
     
         <div class="args">
@@ -133,6 +169,10 @@
     
 
     
+        <span class="returns-inline">
+            <span class="type">Object</span>
+        </span>
+    
 
     
 
@@ -186,7 +226,8 @@
                     
 
                     <div class="param-description">
-                        <p>HTMLElement or a literal Object with the left, top, width and height properties.</p>
+                        <p>The jQuery HTMLElement or a object with: left,
+top, width and height properties.</p>
                     </div>
 
                     
@@ -197,6 +238,19 @@
     
 
     
+        <div class="returns">
+            <h4>Returns:</h4>
+
+            <div class="returns-description">
+                
+                    
+                        <span class="type">Object</span>:
+                    
+                    Coords instance.
+                
+            </div>
+        </div>
+    
 
     
 </div>
diff --git a/docs/classes/Draggable.html b/docs/classes/Draggable.html
index 62f883a3ad..98d00f602e 100644
--- a/docs/classes/Draggable.html
+++ b/docs/classes/Draggable.html
@@ -42,9 +42,25 @@
         <div id="api-tabview-panel">
             <ul id="api-classes" class="apis classes">
             
-                <li><a href="..&#x2F;classes/Collision.html">Collision</a></li>
+                <li><a href="..&#x2F;classes/Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects..html">Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</a></li>
             
-                <li><a href="..&#x2F;classes/Coords.html">Coords</a></li>
+                <li><a href="..&#x2F;classes/Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide..html">Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</a></li>
             
                 <li><a href="..&#x2F;classes/Draggable.html">Draggable</a></li>
             
@@ -109,7 +125,7 @@
 
 
 <div class="box intro">
-    <p>Draggable</p>
+    
 </div>
 
 
@@ -119,10 +135,30 @@
     <h3 class="name"><code>Draggable</code></h3>
 
     
-        <span class="paren">()</span>
+        <div class="args">
+            <span class="paren">(</span><ul class="args-list inline commas">
+            
+                <li class="arg">
+                    
+                        <code>el</code>
+                    
+                </li>
+            
+                <li class="arg">
+                    
+                        <code class="optional">[options]</code>
+                    
+                </li>
+            
+            </ul><span class="paren">)</span>
+        </div>
     
 
     
+        <span class="returns-inline">
+            <span class="type">Object</span>
+        </span>
+    
 
     
 
@@ -162,7 +198,170 @@
     </div>
 
     
+        <div class="params">
+            <h4>Parameters:</h4>
 
+            <ul class="params-list">
+            
+                <li class="param">
+                    
+                        <code class="param-name">el</code>
+                        <span class="type">HTMLElement</span>
+                    
+
+                    
+
+                    <div class="param-description">
+                        <p>The HTMLelement that contains all the widgets
+ to be dragged.</p>
+                    </div>
+
+                    
+                </li>
+            
+                <li class="param">
+                    
+                        <code class="param-name optional">[options]</code>
+                        <span class="type">Object</span>
+                        <span class="flag optional" title="This parameter is optional.">optional</span>
+                    
+
+                    
+
+                    <div class="param-description">
+                        <p>An Object with all options you want to
+       overwrite:</p>
+                    </div>
+
+                    
+                        <ul class="params-list">
+                            
+                            <li class="param">
+                                
+                                    <code class="param-name optional">[items]</code>
+                                    <span class="type">HTMLElement | String</span>
+                                    <span class="flag optional" title="This parameter is optional.">optional</span>
+                                
+
+                                <div class="param-description">
+                                    <p>Define who will
+    be the draggable items. Can be a CSS Selector String or a
+    collection of HTMLElements.</p>
+                                </div>
+
+                                
+                            </li>
+                            
+                            <li class="param">
+                                
+                                    <code class="param-name optional">[distance]</code>
+                                    <span class="type">Number</span>
+                                    <span class="flag optional" title="This parameter is optional.">optional</span>
+                                
+
+                                <div class="param-description">
+                                    <p>Distance in pixels after mousedown
+    the mouse must move before dragging should start.</p>
+                                </div>
+
+                                
+                            </li>
+                            
+                            <li class="param">
+                                
+                                    <code class="param-name optional">[limit]</code>
+                                    <span class="type">Boolean</span>
+                                    <span class="flag optional" title="This parameter is optional.">optional</span>
+                                
+
+                                <div class="param-description">
+                                    <p>Constrains dragging to the width of
+    the container</p>
+                                </div>
+
+                                
+                            </li>
+                            
+                            <li class="param">
+                                
+                                    <code class="param-name optional">[offset_left]</code>
+                                    <span class="type">Offset_left</span>
+                                    <span class="flag optional" title="This parameter is optional.">optional</span>
+                                
+
+                                <div class="param-description">
+                                    <p>Offset added to the item
+    that is being dragged.</p>
+                                </div>
+
+                                
+                            </li>
+                            
+                            <li class="param">
+                                
+                                    <code class="param-name optional">[drag]</code>
+                                    <span class="type">Number</span>
+                                    <span class="flag optional" title="This parameter is optional.">optional</span>
+                                
+
+                                <div class="param-description">
+                                    <p>Executes a callback when the mouse is
+    moved during the dragging.</p>
+                                </div>
+
+                                
+                            </li>
+                            
+                            <li class="param">
+                                
+                                    <code class="param-name optional">[start]</code>
+                                    <span class="type">Number</span>
+                                    <span class="flag optional" title="This parameter is optional.">optional</span>
+                                
+
+                                <div class="param-description">
+                                    <p>Executes a callback when the drag
+    starts.</p>
+                                </div>
+
+                                
+                            </li>
+                            
+                            <li class="param">
+                                
+                                    <code class="param-name optional">[stop]</code>
+                                    <span class="type">Number</span>
+                                    <span class="flag optional" title="This parameter is optional.">optional</span>
+                                
+
+                                <div class="param-description">
+                                    <p>Executes a callback when the drag stops.</p>
+                                </div>
+
+                                
+                            </li>
+                            
+                        </ul>
+                    
+                </li>
+            
+            </ul>
+        </div>
+    
+
+    
+        <div class="returns">
+            <h4>Returns:</h4>
+
+            <div class="returns-description">
+                
+                    
+                        <span class="type">Object</span>:
+                    
+                    Returns <code>el</code>.
+                
+            </div>
+        </div>
     
 
     
diff --git a/docs/classes/Gridster.html b/docs/classes/Gridster.html
index c052ce9429..b6b876c6e6 100644
--- a/docs/classes/Gridster.html
+++ b/docs/classes/Gridster.html
@@ -42,9 +42,25 @@
         <div id="api-tabview-panel">
             <ul id="api-classes" class="apis classes">
             
-                <li><a href="..&#x2F;classes/Collision.html">Collision</a></li>
+                <li><a href="..&#x2F;classes/Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects..html">Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</a></li>
             
-                <li><a href="..&#x2F;classes/Coords.html">Coords</a></li>
+                <li><a href="..&#x2F;classes/Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide..html">Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</a></li>
             
                 <li><a href="..&#x2F;classes/Draggable.html">Draggable</a></li>
             
@@ -96,7 +112,7 @@
             Uses
             <ul class="inline commas">
                 
-                    <li><a href="Coords.html">Coords</a></li>
+                    <li><a href="Draggable.html">Draggable</a></li>
                 
                     <li><a href="Collision.html">Collision</a></li>
                 
@@ -145,6 +161,12 @@
                     
                 </li>
             
+                <li class="arg">
+                    
+                        <code class="optional">[avoid_overlapped_widgets]</code>
+                    
+                </li>
+            
             </ul><span class="paren">)</span>
         </div>
     
@@ -393,8 +415,8 @@
 
                                 <div class="param-description">
                                     <p>An Object with all options for
-    jQuery UI Draggable you want to overwrite. See
-    http://jqueryui.com/demos/draggable/ for more info.</p>
+    Draggable class you want to overwrite. See Draggable docs for more
+    info.</p>
                                 </div>
 
                                 
@@ -404,6 +426,24 @@
                     
                 </li>
             
+                <li class="param">
+                    
+                        <code class="param-name optional">[avoid_overlapped_widgets]</code>
+                        <span class="type">Boolean</span>
+                        <span class="flag optional" title="This parameter is optional.">optional</span>
+                    
+
+                    
+
+                    <div class="param-description">
+                        <p>Avoid that widgets loaded
+    from the DOM can be overlapped. It is helpful if the positions were
+    bad stored in the database or if there was any conflict.</p>
+                    </div>
+
+                    
+                </li>
+            
             </ul>
         </div>
     
@@ -962,7 +1002,7 @@
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l2004"><code>src&#x2F;jquery.gridster.js:2004</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l2030"><code>src&#x2F;jquery.gridster.js:2030</code></a>
         
         </p>
 
@@ -1072,7 +1112,7 @@
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l342"><code>src&#x2F;jquery.gridster.js:342</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l349"><code>src&#x2F;jquery.gridster.js:349</code></a>
         
         </p>
 
@@ -1205,7 +1245,7 @@
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l129"><code>src&#x2F;jquery.gridster.js:129</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l133"><code>src&#x2F;jquery.gridster.js:133</code></a>
         
         </p>
 
@@ -1340,7 +1380,7 @@
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1048"><code>src&#x2F;jquery.gridster.js:1048</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1056"><code>src&#x2F;jquery.gridster.js:1056</code></a>
         
         </p>
 
@@ -1458,7 +1498,7 @@
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1455"><code>src&#x2F;jquery.gridster.js:1455</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1469"><code>src&#x2F;jquery.gridster.js:1469</code></a>
         
         </p>
 
@@ -1595,7 +1635,7 @@ upper row possible.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1097"><code>src&#x2F;jquery.gridster.js:1097</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1105"><code>src&#x2F;jquery.gridster.js:1105</code></a>
         
         </p>
 
@@ -1713,7 +1753,7 @@ upper row possible.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1627"><code>src&#x2F;jquery.gridster.js:1627</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1644"><code>src&#x2F;jquery.gridster.js:1644</code></a>
         
         </p>
 
@@ -1725,8 +1765,8 @@ upper row possible.</p>
 
     <div class="description">
         <p>Check if it's possible to move a widget to a specific col/row. It takes
-into account the dimensions (<code>size_y</code> and <code>size_x</code> attrs. of the grid coords
- object) the widget occupies.</p>
+into account the dimensions (<code>size_y</code> and <code>size_x</code> attrs. of the grid
+ coords object) the widget occupies.</p>
     </div>
 
     
@@ -1840,7 +1880,7 @@ into account the dimensions (<code>size_y</code> and <code>size_x</code> attrs.
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l364"><code>src&#x2F;jquery.gridster.js:364</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l371"><code>src&#x2F;jquery.gridster.js:371</code></a>
         
         </p>
 
@@ -1851,7 +1891,7 @@ into account the dimensions (<code>size_y</code> and <code>size_x</code> attrs.
     </div>
 
     <div class="description">
-        <p>Make widgets draggable. It Wraps the jQuery UI Draggable Plugin.</p>
+        <p>Make widgets draggable.</p>
     </div>
 
     
@@ -1911,7 +1951,7 @@ into account the dimensions (<code>size_y</code> and <code>size_x</code> attrs.
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1590"><code>src&#x2F;jquery.gridster.js:1590</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1606"><code>src&#x2F;jquery.gridster.js:1606</code></a>
         
         </p>
 
@@ -1982,7 +2022,7 @@ into account the dimensions (<code>size_y</code> and <code>size_x</code> attrs.
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l105"><code>src&#x2F;jquery.gridster.js:105</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l108"><code>src&#x2F;jquery.gridster.js:108</code></a>
         
         </p>
 
@@ -2053,7 +2093,7 @@ into account the dimensions (<code>size_y</code> and <code>size_x</code> attrs.
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l117"><code>src&#x2F;jquery.gridster.js:117</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l121"><code>src&#x2F;jquery.gridster.js:121</code></a>
         
         </p>
 
@@ -2140,7 +2180,7 @@ into account the dimensions (<code>size_y</code> and <code>size_x</code> attrs.
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1730"><code>src&#x2F;jquery.gridster.js:1730</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1748"><code>src&#x2F;jquery.gridster.js:1748</code></a>
         
         </p>
 
@@ -2268,7 +2308,7 @@ each one.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1751"><code>src&#x2F;jquery.gridster.js:1751</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1769"><code>src&#x2F;jquery.gridster.js:1769</code></a>
         
         </p>
 
@@ -2396,7 +2436,7 @@ each one.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1770"><code>src&#x2F;jquery.gridster.js:1770</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1788"><code>src&#x2F;jquery.gridster.js:1788</code></a>
         
         </p>
 
@@ -2442,7 +2482,8 @@ each one.</p>
                     
 
                     <div class="param-description">
-                        <p>The function to execute on each column iteration. The row number is passed as first argument.</p>
+                        <p>The function to execute on each column
+ iteration. The row number is passed as first argument.</p>
                     </div>
 
                     
@@ -2529,7 +2570,7 @@ each one.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1836"><code>src&#x2F;jquery.gridster.js:1836</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1855"><code>src&#x2F;jquery.gridster.js:1855</code></a>
         
         </p>
 
@@ -2589,7 +2630,8 @@ each one.</p>
 
                     <div class="param-description">
                         <p>The function to execute on each widget
-iteration. The value of <code>this</code> inside the function is the jQuery wrapped HTMLElement.</p>
+ iteration. The value of <code>this</code> inside the function is the jQuery
+ wrapped HTMLElement.</p>
                     </div>
 
                     
@@ -2676,7 +2718,7 @@ iteration. The value of <code>this</code> inside the function is the jQuery wrap
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1852"><code>src&#x2F;jquery.gridster.js:1852</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1872"><code>src&#x2F;jquery.gridster.js:1872</code></a>
         
         </p>
 
@@ -2736,7 +2778,8 @@ iteration. The value of <code>this</code> inside the function is the jQuery wrap
 
                     <div class="param-description">
                         <p>The function to execute on each widget
-iteration. The value of <code>this</code> inside the function is the jQuery wrapped HTMLElement.</p>
+ iteration. The value of <code>this</code> inside the function is the jQuery wrapped
+ HTMLElement.</p>
                     </div>
 
                     
@@ -2817,7 +2860,7 @@ iteration. The value of <code>this</code> inside the function is the jQuery wrap
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l2027"><code>src&#x2F;jquery.gridster.js:2027</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l2053"><code>src&#x2F;jquery.gridster.js:2053</code></a>
         
         </p>
 
@@ -2927,7 +2970,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l2101"><code>src&#x2F;jquery.gridster.js:2101</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l2127"><code>src&#x2F;jquery.gridster.js:2127</code></a>
         
         </p>
 
@@ -3015,7 +3058,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1941"><code>src&#x2F;jquery.gridster.js:1941</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1960"><code>src&#x2F;jquery.gridster.js:1960</code></a>
         
         </p>
 
@@ -3134,7 +3177,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1702"><code>src&#x2F;jquery.gridster.js:1702</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1720"><code>src&#x2F;jquery.gridster.js:1720</code></a>
         
         </p>
 
@@ -3228,7 +3271,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1868"><code>src&#x2F;jquery.gridster.js:1868</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1889"><code>src&#x2F;jquery.gridster.js:1889</code></a>
         
         </p>
 
@@ -3309,7 +3352,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1667"><code>src&#x2F;jquery.gridster.js:1667</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1684"><code>src&#x2F;jquery.gridster.js:1684</code></a>
         
         </p>
 
@@ -3320,7 +3363,8 @@ detect row or column that we want to go.</p>
     </div>
 
     <div class="description">
-        <p>Given the leftmost column returns all columns that are overlapping with the player.</p>
+        <p>Given the leftmost column returns all columns that are overlapping
+ with the player.</p>
     </div>
 
     
@@ -3414,7 +3458,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1685"><code>src&#x2F;jquery.gridster.js:1685</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1703"><code>src&#x2F;jquery.gridster.js:1703</code></a>
         
         </p>
 
@@ -3531,7 +3575,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1148"><code>src&#x2F;jquery.gridster.js:1148</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1158"><code>src&#x2F;jquery.gridster.js:1158</code></a>
         
         </p>
 
@@ -3659,7 +3703,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l2087"><code>src&#x2F;jquery.gridster.js:2087</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l2113"><code>src&#x2F;jquery.gridster.js:2113</code></a>
         
         </p>
 
@@ -3730,7 +3774,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1226"><code>src&#x2F;jquery.gridster.js:1226</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1236"><code>src&#x2F;jquery.gridster.js:1236</code></a>
         
         </p>
 
@@ -3801,7 +3845,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l975"><code>src&#x2F;jquery.gridster.js:975</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l985"><code>src&#x2F;jquery.gridster.js:985</code></a>
         
         </p>
 
@@ -3888,7 +3932,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l894"><code>src&#x2F;jquery.gridster.js:894</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l904"><code>src&#x2F;jquery.gridster.js:904</code></a>
         
         </p>
 
@@ -4013,7 +4057,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l913"><code>src&#x2F;jquery.gridster.js:913</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l923"><code>src&#x2F;jquery.gridster.js:923</code></a>
         
         </p>
 
@@ -4138,7 +4182,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l867"><code>src&#x2F;jquery.gridster.js:867</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l877"><code>src&#x2F;jquery.gridster.js:877</code></a>
         
         </p>
 
@@ -4257,7 +4301,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l881"><code>src&#x2F;jquery.gridster.js:881</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l891"><code>src&#x2F;jquery.gridster.js:891</code></a>
         
         </p>
 
@@ -4367,7 +4411,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l835"><code>src&#x2F;jquery.gridster.js:835</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l845"><code>src&#x2F;jquery.gridster.js:845</code></a>
         
         </p>
 
@@ -4495,7 +4539,7 @@ HTMLElements.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l852"><code>src&#x2F;jquery.gridster.js:852</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l862"><code>src&#x2F;jquery.gridster.js:862</code></a>
         
         </p>
 
@@ -4621,7 +4665,7 @@ and col given.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l933"><code>src&#x2F;jquery.gridster.js:933</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l943"><code>src&#x2F;jquery.gridster.js:943</code></a>
         
         </p>
 
@@ -4747,7 +4791,7 @@ else returns the jQuery HTMLElement
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l958"><code>src&#x2F;jquery.gridster.js:958</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l968"><code>src&#x2F;jquery.gridster.js:968</code></a>
         
         </p>
 
@@ -4879,7 +4923,7 @@ params and if this is under the widget that is being dragged.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l789"><code>src&#x2F;jquery.gridster.js:789</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l799"><code>src&#x2F;jquery.gridster.js:799</code></a>
         
         </p>
 
@@ -5021,7 +5065,7 @@ each widget) in descending way.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1410"><code>src&#x2F;jquery.gridster.js:1410</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1423"><code>src&#x2F;jquery.gridster.js:1423</code></a>
         
         </p>
 
@@ -5050,7 +5094,8 @@ each widget) in descending way.</p>
                     
 
                     <div class="param-description">
-                        <p>The jQuery object representing the widget you want to move.</p>
+                        <p>The jQuery object representing the widget
+ you want to move.</p>
                     </div>
 
                     
@@ -5140,7 +5185,7 @@ each widget) in descending way.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1321"><code>src&#x2F;jquery.gridster.js:1321</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1331"><code>src&#x2F;jquery.gridster.js:1331</code></a>
         
         </p>
 
@@ -5171,7 +5216,8 @@ if they can.</p>
                     
 
                     <div class="param-description">
-                        <p>The jQuery wrapped HTMLElement of the widget is going to be moved.</p>
+                        <p>The jQuery wrapped HTMLElement of the
+widget is going to be moved.</p>
                     </div>
 
                     
@@ -5252,7 +5298,7 @@ if they can.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1364"><code>src&#x2F;jquery.gridster.js:1364</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1375"><code>src&#x2F;jquery.gridster.js:1375</code></a>
         
         </p>
 
@@ -5378,7 +5424,7 @@ if they can.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l159"><code>src&#x2F;jquery.gridster.js:159</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l163"><code>src&#x2F;jquery.gridster.js:163</code></a>
         
         </p>
 
@@ -5500,7 +5546,7 @@ if they can.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l452"><code>src&#x2F;jquery.gridster.js:452</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l461"><code>src&#x2F;jquery.gridster.js:461</code></a>
         
         </p>
 
@@ -5544,8 +5590,7 @@ if they can.</p>
                     
 
                     <div class="param-description">
-                        <p>prepared ui object.
- See http://jqueryui.com/demos/draggable/ for more info.</p>
+                        <p>prepared ui object.</p>
                     </div>
 
                     
@@ -5613,7 +5658,7 @@ if they can.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l545"><code>src&#x2F;jquery.gridster.js:545</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l555"><code>src&#x2F;jquery.gridster.js:555</code></a>
         
         </p>
 
@@ -5741,7 +5786,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l585"><code>src&#x2F;jquery.gridster.js:585</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l595"><code>src&#x2F;jquery.gridster.js:595</code></a>
         
         </p>
 
@@ -5865,7 +5910,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l400"><code>src&#x2F;jquery.gridster.js:400</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l410"><code>src&#x2F;jquery.gridster.js:410</code></a>
         
         </p>
 
@@ -5909,8 +5954,7 @@ overlapped or stops being overlapped.</p>
                     
 
                     <div class="param-description">
-                        <p>prepared ui object.
- See http://jqueryui.com/demos/draggable/ for more info.</p>
+                        <p>prepared ui object.</p>
                     </div>
 
                     
@@ -5972,7 +6016,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1259"><code>src&#x2F;jquery.gridster.js:1259</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1269"><code>src&#x2F;jquery.gridster.js:1269</code></a>
         
         </p>
 
@@ -6076,7 +6120,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1271"><code>src&#x2F;jquery.gridster.js:1271</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1281"><code>src&#x2F;jquery.gridster.js:1281</code></a>
         
         </p>
 
@@ -6182,7 +6226,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l489"><code>src&#x2F;jquery.gridster.js:489</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l499"><code>src&#x2F;jquery.gridster.js:499</code></a>
         
         </p>
 
@@ -6226,8 +6270,7 @@ overlapped or stops being overlapped.</p>
                     
 
                     <div class="param-description">
-                        <p>prepared ui object.
- See http://jqueryui.com/demos/draggable/ for more info.</p>
+                        <p>prepared ui object.</p>
                     </div>
 
                     
@@ -6289,7 +6332,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1283"><code>src&#x2F;jquery.gridster.js:1283</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1293"><code>src&#x2F;jquery.gridster.js:1293</code></a>
         
         </p>
 
@@ -6393,7 +6436,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1301"><code>src&#x2F;jquery.gridster.js:1301</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1311"><code>src&#x2F;jquery.gridster.js:1311</code></a>
         
         </p>
 
@@ -6487,7 +6530,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l2063"><code>src&#x2F;jquery.gridster.js:2063</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l2089"><code>src&#x2F;jquery.gridster.js:2089</code></a>
         
         </p>
 
@@ -6559,7 +6602,7 @@ the browser is resized.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l265"><code>src&#x2F;jquery.gridster.js:265</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l272"><code>src&#x2F;jquery.gridster.js:272</code></a>
         
         </p>
 
@@ -6641,7 +6684,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l329"><code>src&#x2F;jquery.gridster.js:329</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l336"><code>src&#x2F;jquery.gridster.js:336</code></a>
         
         </p>
 
@@ -6746,7 +6789,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l201"><code>src&#x2F;jquery.gridster.js:201</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l205"><code>src&#x2F;jquery.gridster.js:205</code></a>
         
         </p>
 
@@ -6850,7 +6893,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l231"><code>src&#x2F;jquery.gridster.js:231</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l237"><code>src&#x2F;jquery.gridster.js:237</code></a>
         
         </p>
 
@@ -6948,7 +6991,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l253"><code>src&#x2F;jquery.gridster.js:253</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l259"><code>src&#x2F;jquery.gridster.js:259</code></a>
         
         </p>
 
@@ -6959,7 +7002,8 @@ mapped array of positions.</p>
     </div>
 
     <div class="description">
-        <p>Returns a serialized array of the widgets that have changed their position.</p>
+        <p>Returns a serialized array of the widgets that have changed their
+ position.</p>
     </div>
 
     
@@ -7036,7 +7080,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1573"><code>src&#x2F;jquery.gridster.js:1573</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1589"><code>src&#x2F;jquery.gridster.js:1589</code></a>
         
         </p>
 
@@ -7145,7 +7189,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1927"><code>src&#x2F;jquery.gridster.js:1927</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1947"><code>src&#x2F;jquery.gridster.js:1947</code></a>
         
         </p>
 
@@ -7232,7 +7276,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l997"><code>src&#x2F;jquery.gridster.js:997</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1007"><code>src&#x2F;jquery.gridster.js:1007</code></a>
         
         </p>
 
@@ -7359,7 +7403,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l621"><code>src&#x2F;jquery.gridster.js:621</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l631"><code>src&#x2F;jquery.gridster.js:631</code></a>
         
         </p>
 
@@ -7480,7 +7524,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l710"><code>src&#x2F;jquery.gridster.js:710</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l720"><code>src&#x2F;jquery.gridster.js:720</code></a>
         
         </p>
 
@@ -7585,7 +7629,7 @@ each widget) in ascending way.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l750"><code>src&#x2F;jquery.gridster.js:750</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l760"><code>src&#x2F;jquery.gridster.js:760</code></a>
         
         </p>
 
@@ -7690,7 +7734,7 @@ coords of each widget) in ascending way.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l730"><code>src&#x2F;jquery.gridster.js:730</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l740"><code>src&#x2F;jquery.gridster.js:740</code></a>
         
         </p>
 
@@ -7795,7 +7839,7 @@ each widget) placing first the empty cells upper left.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l770"><code>src&#x2F;jquery.gridster.js:770</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l780"><code>src&#x2F;jquery.gridster.js:780</code></a>
         
         </p>
 
@@ -7906,7 +7950,7 @@ each widget) in descending way.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l308"><code>src&#x2F;jquery.gridster.js:308</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l315"><code>src&#x2F;jquery.gridster.js:315</code></a>
         
         </p>
 
@@ -8029,7 +8073,7 @@ the grid coords object passed in the <code>grid_data</code> param.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1544"><code>src&#x2F;jquery.gridster.js:1544</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1560"><code>src&#x2F;jquery.gridster.js:1560</code></a>
         
         </p>
 
@@ -8133,7 +8177,7 @@ the grid coords object passed in the <code>grid_data</code> param.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l674"><code>src&#x2F;jquery.gridster.js:674</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l684"><code>src&#x2F;jquery.gridster.js:684</code></a>
         
         </p>
 
diff --git a/docs/data.json b/docs/data.json
index 63b56646c8..b050d5dd75 100644
--- a/docs/data.json
+++ b/docs/data.json
@@ -5,7 +5,7 @@
             "name": "src/jquery.collision.js",
             "modules": {},
             "classes": {
-                "Collision": 1
+                "Collision\n\nDetects collisions between a DOM element against other DOM elements or\nCoords objects.": 1
             },
             "fors": {},
             "namespaces": {}
@@ -14,7 +14,7 @@
             "name": "src/jquery.coords.js",
             "modules": {},
             "classes": {
-                "Coords": 1
+                "Coords\n\nCreates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)\nto simulate DOM elements on the screen.\nCoords is used by Gridster to create a faux grid with any DOM element can\ncollide.": 1
             },
             "fors": {},
             "namespaces": {}
@@ -40,54 +40,51 @@
     },
     "modules": {},
     "classes": {
-        "Collision": {
-            "name": "Collision",
-            "shortname": "Collision",
+        "Collision\n\nDetects collisions between a DOM element against other DOM elements or\nCoords objects.": {
+            "name": "Collision\n\nDetects collisions between a DOM element against other DOM elements or\nCoords objects.",
+            "shortname": "Collision\n\nDetects collisions between a DOM element against other DOM elements or\nCoords objects.",
             "classitems": [],
             "plugins": [],
             "extensions": [],
             "plugin_for": [],
-            "extension_for": [
-                "Gridster"
-            ],
+            "extension_for": [],
             "file": "src/jquery.collision.js",
-            "line": 22,
-            "description": "Collision",
+            "line": 19,
             "uses": [
                 "Coords"
             ],
             "params": [
                 {
-                    "name": "element",
-                    "description": "An Attribute name or object property path",
+                    "name": "el",
+                    "description": "The jQuery wrapped HTMLElement.",
                     "type": "HTMLElement"
                 },
                 {
                     "name": "colliders",
-                    "description": "An Attribute name or object property path",
-                    "type": "String|HTMLElement|Array"
+                    "description": "Can be a jQuery collection\n of HTMLElements or an Array of Coords instances.",
+                    "type": "HTMLElement|Array"
                 },
                 {
                     "name": "options",
-                    "description": "An Attribute name or object property path",
+                    "description": "An Object with all options you want to\n       overwrite:",
                     "type": "Object",
                     "optional": true,
                     "props": [
-                        {
-                            "name": "on_overlap",
-                            "description": "An Attribute name or object property path",
-                            "type": "Function",
-                            "optional": true
-                        },
                         {
                             "name": "on_overlap_start",
-                            "description": "An Attribute name or object property path",
+                            "description": "Executes a function the first\n   time each `collider ` is overlapped.",
                             "type": "Function",
                             "optional": true
                         },
                         {
                             "name": "on_overlap_stop",
-                            "description": "An Attribute name or object property path",
+                            "description": "Executes a function when a\n   `collider` is no longer collided.",
+                            "type": "Function",
+                            "optional": true
+                        },
+                        {
+                            "name": "on_overlap",
+                            "description": "Executes a function when the\nmouse is moved during the collision.",
                             "type": "Function",
                             "optional": true
                         }
@@ -95,32 +92,32 @@
                 }
             ],
             "return": {
-                "description": "dasdasdadasd",
+                "description": "Collision instance.",
                 "type": "Object"
             },
             "is_constructor": 1
         },
-        "Coords": {
-            "name": "Coords",
-            "shortname": "Coords",
+        "Coords\n\nCreates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)\nto simulate DOM elements on the screen.\nCoords is used by Gridster to create a faux grid with any DOM element can\ncollide.": {
+            "name": "Coords\n\nCreates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)\nto simulate DOM elements on the screen.\nCoords is used by Gridster to create a faux grid with any DOM element can\ncollide.",
+            "shortname": "Coords\n\nCreates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)\nto simulate DOM elements on the screen.\nCoords is used by Gridster to create a faux grid with any DOM element can\ncollide.",
             "classitems": [],
             "plugins": [],
             "extensions": [],
             "plugin_for": [],
-            "extension_for": [
-                "Collision",
-                "Gridster"
-            ],
+            "extension_for": [],
             "file": "src/jquery.coords.js",
             "line": 10,
-            "description": "Coords",
             "params": [
                 {
                     "name": "obj",
-                    "description": "HTMLElement or a literal Object with the left, top, width and height properties.",
+                    "description": "The jQuery HTMLElement or a object with: left,\ntop, width and height properties.",
                     "type": "HTMLElement|Object"
                 }
             ],
+            "return": {
+                "description": "Coords instance.",
+                "type": "Object"
+            },
             "is_constructor": 1
         },
         "Draggable": {
@@ -130,10 +127,72 @@
             "plugins": [],
             "extensions": [],
             "plugin_for": [],
-            "extension_for": [],
+            "extension_for": [
+                "Gridster"
+            ],
             "file": "src/jquery.draggable.js",
             "line": 24,
-            "description": "Draggable",
+            "params": [
+                {
+                    "name": "el",
+                    "description": "The HTMLelement that contains all the widgets\n to be dragged.",
+                    "type": "HTMLElement"
+                },
+                {
+                    "name": "options",
+                    "description": "An Object with all options you want to\n       overwrite:",
+                    "type": "Object",
+                    "optional": true,
+                    "props": [
+                        {
+                            "name": "items",
+                            "description": "Define who will\n    be the draggable items. Can be a CSS Selector String or a\n    collection of HTMLElements.",
+                            "type": "HTMLElement|String",
+                            "optional": true
+                        },
+                        {
+                            "name": "distance",
+                            "description": "Distance in pixels after mousedown\n    the mouse must move before dragging should start.",
+                            "type": "Number",
+                            "optional": true
+                        },
+                        {
+                            "name": "limit",
+                            "description": "Constrains dragging to the width of\n    the container",
+                            "type": "Boolean",
+                            "optional": true
+                        },
+                        {
+                            "name": "offset_left",
+                            "description": "Offset added to the item\n    that is being dragged.",
+                            "type": "Offset_left",
+                            "optional": true
+                        },
+                        {
+                            "name": "drag",
+                            "description": "Executes a callback when the mouse is\n    moved during the dragging.",
+                            "type": "Number",
+                            "optional": true
+                        },
+                        {
+                            "name": "start",
+                            "description": "Executes a callback when the drag\n    starts.",
+                            "type": "Number",
+                            "optional": true
+                        },
+                        {
+                            "name": "stop",
+                            "description": "Executes a callback when the drag stops.",
+                            "type": "Number",
+                            "optional": true
+                        }
+                    ]
+                }
+            ],
+            "return": {
+                "description": "Returns `el`.",
+                "type": "Object"
+            },
             "is_constructor": 1
         },
         "Gridster": {
@@ -147,7 +206,7 @@
             "file": "src/jquery.gridster.js",
             "line": 33,
             "uses": [
-                "Coords",
+                "Draggable",
                 "Collision"
             ],
             "params": [
@@ -224,11 +283,17 @@
                         },
                         {
                             "name": "draggable",
-                            "description": "An Object with all options for\n    jQuery UI Draggable you want to overwrite. See\n    http://jqueryui.com/demos/draggable/ for more info.",
+                            "description": "An Object with all options for\n    Draggable class you want to overwrite. See Draggable docs for more\n    info.",
                             "type": "Object",
                             "optional": true
                         }
                     ]
+                },
+                {
+                    "name": "avoid_overlapped_widgets",
+                    "description": "Avoid that widgets loaded\n    from the DOM can be overlapped. It is helpful if the positions were\n    bad stored in the database or if there was any conflict.",
+                    "type": "Boolean",
+                    "optional": true
                 }
             ],
             "is_constructor": 1
@@ -237,7 +302,7 @@
     "classitems": [
         {
             "file": "src/jquery.gridster.js",
-            "line": 105,
+            "line": 108,
             "description": "Disable dragging.",
             "itemtype": "method",
             "name": "enable",
@@ -249,7 +314,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 117,
+            "line": 121,
             "description": "Enable dragging.",
             "itemtype": "method",
             "name": "enable",
@@ -261,7 +326,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 129,
+            "line": 133,
             "description": "Add a new widget to the grid.",
             "itemtype": "method",
             "name": "add_widget",
@@ -290,7 +355,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 159,
+            "line": 163,
             "description": "Get the most left column below to add a new widget.",
             "itemtype": "method",
             "name": "next_position",
@@ -314,7 +379,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 201,
+            "line": 205,
             "description": "Remove a widget from the grid.",
             "itemtype": "method",
             "name": "remove_widget",
@@ -333,7 +398,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 231,
+            "line": 237,
             "description": "Returns a serialized array of the widgets in the grid.",
             "itemtype": "method",
             "name": "serialize",
@@ -353,8 +418,8 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 253,
-            "description": "Returns a serialized array of the widgets that have changed their position.",
+            "line": 259,
+            "description": "Returns a serialized array of the widgets that have changed their\n position.",
             "itemtype": "method",
             "name": "serialize_changed",
             "return": {
@@ -365,7 +430,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 265,
+            "line": 272,
             "description": "Creates the grid coords object representing the widget a add it to the\nmapped array of positions.",
             "itemtype": "method",
             "name": "register_widget",
@@ -377,7 +442,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 308,
+            "line": 315,
             "description": "Update in the mapped array of positions the value of cells represented by\nthe grid coords object passed in the `grid_data` param.",
             "params": [
                 {
@@ -401,7 +466,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 329,
+            "line": 336,
             "description": "Remove a widget from the mapped array of positions.",
             "itemtype": "method",
             "name": "remove_from_gridmap",
@@ -420,7 +485,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 342,
+            "line": 349,
             "description": "Add a widget to the mapped array of positions.",
             "itemtype": "method",
             "name": "add_to_gridmap",
@@ -444,8 +509,11 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 364,
-            "description": "Make widgets draggable. It Wraps the jQuery UI Draggable Plugin.",
+            "line": 371,
+            "description": "Make widgets draggable.",
+            "uses": [
+                "Draggable"
+            ],
             "itemtype": "method",
             "name": "draggable",
             "return": {
@@ -456,7 +524,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 400,
+            "line": 410,
             "description": "This function is executed when the player begins to be dragged.",
             "itemtype": "method",
             "name": "on_start_drag",
@@ -468,7 +536,7 @@
                 },
                 {
                     "name": "A",
-                    "description": "prepared ui object.\n See http://jqueryui.com/demos/draggable/ for more info.",
+                    "description": "prepared ui object.",
                     "type": "Object"
                 }
             ],
@@ -476,7 +544,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 452,
+            "line": 461,
             "description": "This function is executed when the player is being dragged.",
             "itemtype": "method",
             "name": "on_drag",
@@ -488,7 +556,7 @@
                 },
                 {
                     "name": "A",
-                    "description": "prepared ui object.\n See http://jqueryui.com/demos/draggable/ for more info.",
+                    "description": "prepared ui object.",
                     "type": "Object"
                 }
             ],
@@ -496,7 +564,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 489,
+            "line": 499,
             "description": "This function is executed when the player stops being dragged.",
             "itemtype": "method",
             "name": "on_stop_drag",
@@ -508,7 +576,7 @@
                 },
                 {
                     "name": "A",
-                    "description": "prepared ui object.\n See http://jqueryui.com/demos/draggable/ for more info.",
+                    "description": "prepared ui object.",
                     "type": "Object"
                 }
             ],
@@ -516,7 +584,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 545,
+            "line": 555,
             "description": "Executes the callbacks passed as arguments when a column begins to be\noverlapped or stops being overlapped.",
             "params": [
                 {
@@ -540,7 +608,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 585,
+            "line": 595,
             "description": "Executes the callbacks passed as arguments when a row starts to be\noverlapped or stops being overlapped.",
             "params": [
                 {
@@ -564,7 +632,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 621,
+            "line": 631,
             "description": "Sets the current position of the player",
             "params": [
                 {
@@ -588,7 +656,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 674,
+            "line": 684,
             "description": "See which of the widgets in the $widgets param collection can go to\na upper row and which not.",
             "itemtype": "method",
             "name": "widgets_contraints",
@@ -607,7 +675,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 710,
+            "line": 720,
             "description": "Sorts an Array of grid coords objects (representing the grid coords of\neach widget) in ascending way.",
             "itemtype": "method",
             "name": "sort_by_row_asc",
@@ -626,7 +694,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 730,
+            "line": 740,
             "description": "Sorts an Array of grid coords objects (representing the grid coords of\neach widget) placing first the empty cells upper left.",
             "itemtype": "method",
             "name": "sort_by_row_asc",
@@ -645,7 +713,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 750,
+            "line": 760,
             "description": "Sorts an Array of grid coords objects by column (representing the grid\ncoords of each widget) in ascending way.",
             "itemtype": "method",
             "name": "sort_by_row_asc",
@@ -664,7 +732,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 770,
+            "line": 780,
             "description": "Sorts an Array of grid coords objects (representing the grid coords of\neach widget) in descending way.",
             "itemtype": "method",
             "name": "sort_by_row_desc",
@@ -683,7 +751,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 789,
+            "line": 799,
             "description": "Sorts an Array of grid coords objects (representing the grid coords of\neach widget) in descending way.",
             "itemtype": "method",
             "name": "manage_movements",
@@ -712,7 +780,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 835,
+            "line": 845,
             "description": "Determines if there is a widget in the row and col given. Or if the\nHTMLElement passed as first argument is the player.",
             "itemtype": "method",
             "name": "is_player",
@@ -737,7 +805,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 852,
+            "line": 862,
             "description": "Determines if the widget that is being dragged is currently over the row\nand col given.",
             "itemtype": "method",
             "name": "is_player_in",
@@ -761,7 +829,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 867,
+            "line": 877,
             "description": "Determines if the placeholder is currently over the row and col given.",
             "itemtype": "method",
             "name": "is_placeholder_in",
@@ -785,7 +853,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 881,
+            "line": 891,
             "description": "Determines if the placeholder is currently over the column given.",
             "itemtype": "method",
             "name": "is_placeholder_in_col",
@@ -804,7 +872,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 894,
+            "line": 904,
             "description": "Determines if the cell represented by col and row params is empty.",
             "itemtype": "method",
             "name": "is_empty",
@@ -828,7 +896,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 913,
+            "line": 923,
             "description": "Determines if the cell represented by col and row params is occupied.",
             "itemtype": "method",
             "name": "is_occupied",
@@ -852,7 +920,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 933,
+            "line": 943,
             "description": "Determines if there is a widget in the cell represented by col/row params.",
             "itemtype": "method",
             "name": "is_widget",
@@ -876,7 +944,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 958,
+            "line": 968,
             "description": "Determines if there is a widget in the cell represented by col/row\nparams and if this is under the widget that is being dragged.",
             "itemtype": "method",
             "name": "is_widget_under_player",
@@ -900,7 +968,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 975,
+            "line": 985,
             "description": "Get widgets overlapping with the player.",
             "itemtype": "method",
             "name": "get_widgets_under_player",
@@ -912,7 +980,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 997,
+            "line": 1007,
             "description": "Put placeholder at the row and column specified.",
             "itemtype": "method",
             "name": "set_placeholder",
@@ -936,7 +1004,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1048,
+            "line": 1056,
             "description": "Determines whether the player can move to a position above.",
             "itemtype": "method",
             "name": "can_go_player_up",
@@ -955,7 +1023,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1097,
+            "line": 1105,
             "description": "Determines whether a widget can move to a position above.",
             "itemtype": "method",
             "name": "can_go_widget_up",
@@ -974,7 +1042,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1148,
+            "line": 1158,
             "description": "Search a valid row for the widget represented by `widget_grid_data' in\nthe `upper_rows` array. Iteration starts from row specified in `min_row`.",
             "itemtype": "method",
             "name": "get_valid_rows",
@@ -1003,7 +1071,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1226,
+            "line": 1236,
             "description": "Get widgets overlapping with the player.",
             "itemtype": "method",
             "name": "get_widgets_overlapped",
@@ -1015,7 +1083,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1259,
+            "line": 1269,
             "description": "This callback is executed when the player begins to collide with a column.",
             "itemtype": "method",
             "name": "on_start_overlapping_column",
@@ -1034,7 +1102,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1271,
+            "line": 1281,
             "description": "A callback executed when the player begins to collide with a row.",
             "itemtype": "method",
             "name": "on_start_overlapping_row",
@@ -1053,7 +1121,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1283,
+            "line": 1293,
             "description": "A callback executed when the the player ends to collide with a column.",
             "itemtype": "method",
             "name": "on_stop_overlapping_column",
@@ -1072,7 +1140,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1301,
+            "line": 1311,
             "description": "This callback is executed when the player ends to collide with a row.",
             "itemtype": "method",
             "name": "on_stop_overlapping_row",
@@ -1091,14 +1159,14 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1321,
+            "line": 1331,
             "description": "Move a widget to a specific row. The cell or cells must be empty.\nIf the widget has widgets below, all of these widgets will be moved also\nif they can.",
             "itemtype": "method",
             "name": "move_widget_to",
             "params": [
                 {
                     "name": "$widget",
-                    "description": "The jQuery wrapped HTMLElement of the widget is going to be moved.",
+                    "description": "The jQuery wrapped HTMLElement of the\nwidget is going to be moved.",
                     "type": "HTMLElement"
                 }
             ],
@@ -1110,7 +1178,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1364,
+            "line": 1375,
             "description": "Move up the specified widget and all below it.",
             "itemtype": "method",
             "name": "move_widget_up",
@@ -1135,14 +1203,14 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1410,
+            "line": 1423,
             "description": "Move down the specified widget and all below it.",
             "itemtype": "method",
             "name": "move_widget_down",
             "params": [
                 {
                     "name": "$widget",
-                    "description": "The jQuery object representing the widget you want to move.",
+                    "description": "The jQuery object representing the widget\n you want to move.",
                     "type": "HTMLElement"
                 },
                 {
@@ -1159,7 +1227,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1455,
+            "line": 1469,
             "description": "Check if the widget can move to the specified row, else returns the\nupper row possible.",
             "itemtype": "method",
             "name": "can_go_up_to_row",
@@ -1188,7 +1256,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1544,
+            "line": 1560,
             "description": "Get widgets below a widget.",
             "itemtype": "method",
             "name": "widgets_below",
@@ -1207,7 +1275,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1573,
+            "line": 1589,
             "description": "Update the array of mapped positions with the new player position.",
             "itemtype": "method",
             "name": "set_cells_player_occupies",
@@ -1231,7 +1299,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1590,
+            "line": 1606,
             "description": "Remove from the array of mapped positions the reference to the player.",
             "itemtype": "method",
             "name": "empty_cells_player_occupies",
@@ -1243,8 +1311,8 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1627,
-            "description": "Check if it's possible to move a widget to a specific col/row. It takes\ninto account the dimensions (`size_y` and `size_x` attrs. of the grid coords\n object) the widget occupies.",
+            "line": 1644,
+            "description": "Check if it's possible to move a widget to a specific col/row. It takes\ninto account the dimensions (`size_y` and `size_x` attrs. of the grid\n coords object) the widget occupies.",
             "itemtype": "method",
             "name": "can_move_to",
             "params": [
@@ -1272,8 +1340,8 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1667,
-            "description": "Given the leftmost column returns all columns that are overlapping with the player.",
+            "line": 1684,
+            "description": "Given the leftmost column returns all columns that are overlapping\n with the player.",
             "itemtype": "method",
             "name": "get_targeted_columns",
             "params": [
@@ -1292,7 +1360,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1685,
+            "line": 1703,
             "description": "Given the upper row returns all rows that are overlapping with the player.",
             "itemtype": "method",
             "name": "get_targeted_rows",
@@ -1312,7 +1380,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1702,
+            "line": 1720,
             "description": "Get all columns and rows that a widget occupies.",
             "itemtype": "method",
             "name": "get_cells_occupied",
@@ -1331,7 +1399,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1730,
+            "line": 1748,
             "description": "Iterate over the cells occupied by a widget executing a function for\neach one.",
             "itemtype": "method",
             "name": "for_each_cell_occupied",
@@ -1355,7 +1423,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1751,
+            "line": 1769,
             "description": "Iterate over the columns occupied by a widget executing a function for\neach one.",
             "itemtype": "method",
             "name": "for_each_column_occupied",
@@ -1379,7 +1447,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1770,
+            "line": 1788,
             "description": "Iterate over the rows occupied by a widget executing a function for\neach one.",
             "itemtype": "method",
             "name": "for_each_row_occupied",
@@ -1391,7 +1459,7 @@
                 },
                 {
                     "name": "callback",
-                    "description": "The function to execute on each column iteration. The row number is passed as first argument.",
+                    "description": "The function to execute on each column\n iteration. The row number is passed as first argument.",
                     "type": "Function"
                 }
             ],
@@ -1403,7 +1471,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1836,
+            "line": 1855,
             "description": "Iterate over each widget above the column and row specified.",
             "itemtype": "method",
             "name": "for_each_widget_above",
@@ -1420,7 +1488,7 @@
                 },
                 {
                     "name": "callback",
-                    "description": "The function to execute on each widget\niteration. The value of `this` inside the function is the jQuery wrapped HTMLElement.",
+                    "description": "The function to execute on each widget\n iteration. The value of `this` inside the function is the jQuery\n wrapped HTMLElement.",
                     "type": "Function"
                 }
             ],
@@ -1432,7 +1500,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1852,
+            "line": 1872,
             "description": "Iterate over each widget below the column and row specified.",
             "itemtype": "method",
             "name": "for_each_widget_below",
@@ -1449,7 +1517,7 @@
                 },
                 {
                     "name": "callback",
-                    "description": "The function to execute on each widget\niteration. The value of `this` inside the function is the jQuery wrapped HTMLElement.",
+                    "description": "The function to execute on each widget\n iteration. The value of `this` inside the function is the jQuery wrapped\n HTMLElement.",
                     "type": "Function"
                 }
             ],
@@ -1461,7 +1529,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1868,
+            "line": 1889,
             "description": "Returns the highest occupied cell in the grid.",
             "itemtype": "method",
             "name": "get_highest_occupied_cell",
@@ -1473,7 +1541,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1927,
+            "line": 1947,
             "description": "Set the current height of the parent grid.",
             "itemtype": "method",
             "name": "set_dom_grid_height",
@@ -1485,7 +1553,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1941,
+            "line": 1960,
             "description": "It generates the neccessary styles to position the widgets.",
             "itemtype": "method",
             "name": "generate_stylesheet",
@@ -1509,7 +1577,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 2004,
+            "line": 2030,
             "description": "Injects the given CSS as string to the head of the document.",
             "itemtype": "method",
             "name": "add_style_tag",
@@ -1528,7 +1596,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 2027,
+            "line": 2053,
             "description": "Generates a faux grid to collide with it when a widget is dragged and\ndetect row or column that we want to go.",
             "itemtype": "method",
             "name": "generate_faux_grid",
@@ -1552,7 +1620,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 2063,
+            "line": 2089,
             "description": "Recalculates the offsets for the faux grid. You need to use it when\nthe browser is resized.",
             "itemtype": "method",
             "name": "recalculate_faux_grid",
@@ -1564,7 +1632,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 2087,
+            "line": 2113,
             "description": "Get all widgets in the DOM and register them.",
             "itemtype": "method",
             "name": "get_widgets_from_DOM",
@@ -1576,7 +1644,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 2101,
+            "line": 2127,
             "description": "Calculate columns and rows to be set based on the configuration\n parameters, grid dimensions, etc ...",
             "itemtype": "method",
             "name": "generate_grid_and_stylesheet",
diff --git a/docs/files/src_jquery.collision.js.html b/docs/files/src_jquery.collision.js.html
index 0d078d2bd7..6e0eeefb54 100644
--- a/docs/files/src_jquery.collision.js.html
+++ b/docs/files/src_jquery.collision.js.html
@@ -42,9 +42,25 @@
         <div id="api-tabview-panel">
             <ul id="api-classes" class="apis classes">
             
-                <li><a href="..&#x2F;classes/Collision.html">Collision</a></li>
+                <li><a href="..&#x2F;classes/Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects..html">Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</a></li>
             
-                <li><a href="..&#x2F;classes/Coords.html">Coords</a></li>
+                <li><a href="..&#x2F;classes/Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide..html">Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</a></li>
             
                 <li><a href="..&#x2F;classes/Draggable.html">Draggable</a></li>
             
@@ -104,198 +120,216 @@
 ;(function($, window, document, undefined){
 
     var defaults = {
-      colliders_context: document.body,
-      on_overlap: function(collider_data){},
-      on_overlap_start : function(collider_data){
-          &#x2F;&#x2F; console.log(&#x27;the element START being a collider&#x27;, collider_data);
-      },
-      on_overlap_stop : function(collider_data){
-          &#x2F;&#x2F; console.log(&#x27;the element STOP being a collider&#x27;, collider_data);
-      }
+        colliders_context: document.body
+        &#x2F;&#x2F; ,on_overlap: function(collider_data){},
+        &#x2F;&#x2F; on_overlap_start : function(collider_data){},
+        &#x2F;&#x2F; on_overlap_stop : function(collider_data){}
     };
 
+
     &#x2F;**
-    * Collision
-    *
     * @class Collision
+    *
+    * Detects collisions between a DOM element against other DOM elements or
+    * Coords objects.
+    *
     * @uses Coords
-    * @param {HTMLElement} element An Attribute name or object property path
-    * @param {String|HTMLElement|Array} colliders An Attribute name or object property path
-    * @param {Object} [options] An Attribute name or object property path
-    *   @param {Function} [options.on_overlap] An Attribute name or object property path
-    *   @param {Function} [options.on_overlap_start] An Attribute name or object property path
-    *   @param {Function} [options.on_overlap_stop] An Attribute name or object property path
-    * @return {Object} dasdasdadasd
+    * @param {HTMLElement} el The jQuery wrapped HTMLElement.
+    * @param {HTMLElement|Array} colliders Can be a jQuery collection
+    *  of HTMLElements or an Array of Coords instances.
+    * @param {Object} [options] An Object with all options you want to
+    *        overwrite:
+    *   @param {Function} [options.on_overlap_start] Executes a function the first
+    *    time each &#x60;collider &#x60; is overlapped.
+    *   @param {Function} [options.on_overlap_stop] Executes a function when a
+    *    &#x60;collider&#x60; is no longer collided.
+    *   @param {Function} [options.on_overlap] Executes a function when the
+    * mouse is moved during the collision.
+    * @return {Object} Collision instance.
     * @constructor
     *&#x2F;
-    function Collision(element, colliders, options) {
-      this.options = $.extend(defaults, options);
-      this.$element = element;
-      this.last_colliders = [];
-      this.last_colliders_coords = [];
-      if (typeof colliders === &#x27;string&#x27; || colliders instanceof jQuery) {
-          this.$colliders = $(colliders,
-               this.options.colliders_context).not(this.$element);
-      }else{
-          this.colliders = $(colliders);
-      }
+    function Collision(el, colliders, options) {
+        this.options = $.extend(defaults, options);
+        this.$element = el;
+        this.last_colliders = [];
+        this.last_colliders_coords = [];
+        if (typeof colliders === &#x27;string&#x27; || colliders instanceof jQuery) {
+            this.$colliders = $(colliders,
+                 this.options.colliders_context).not(this.$element);
+        }else{
+            this.colliders = $(colliders);
+        }
 
-      this.init();
+        this.init();
     }
 
+
     var fn = Collision.prototype;
 
+
     fn.init = function() {
-      this.find_collisions();
+        this.find_collisions();
     };
 
+
     fn.overlaps = function(a, b) {
-      var x = false;
-      var y = false;
+        var x = false;
+        var y = false;
 
-      if ((b.x1 &gt;= a.x1 &amp;&amp; b.x1 &lt;= a.x2) ||
-          (b.x2 &gt;= a.x1 &amp;&amp; b.x2 &lt;= a.x2) ||
-          (a.x1 &gt;= b.x1 &amp;&amp; a.x2 &lt;= b.x2)
-      ) { x = true; }
+        if ((b.x1 &gt;= a.x1 &amp;&amp; b.x1 &lt;= a.x2) ||
+            (b.x2 &gt;= a.x1 &amp;&amp; b.x2 &lt;= a.x2) ||
+            (a.x1 &gt;= b.x1 &amp;&amp; a.x2 &lt;= b.x2)
+        ) { x = true; }
 
-      if ((b.y1 &gt;= a.y1 &amp;&amp; b.y1 &lt;= a.y2) ||
-          (b.y2 &gt;= a.y1 &amp;&amp; b.y2 &lt;= a.y2) ||
-          (a.y1 &gt;= b.y1 &amp;&amp; a.y2 &lt;= b.y2)
-      ) { y = true; }
+        if ((b.y1 &gt;= a.y1 &amp;&amp; b.y1 &lt;= a.y2) ||
+            (b.y2 &gt;= a.y1 &amp;&amp; b.y2 &lt;= a.y2) ||
+            (a.y1 &gt;= b.y1 &amp;&amp; a.y2 &lt;= b.y2)
+        ) { y = true; }
 
-      return (x &amp;&amp; y);
+        return (x &amp;&amp; y);
     };
 
+
     fn.detect_overlapping_region = function(a, b){
-      var regionX = &#x27;&#x27;;
-      var regionY = &#x27;&#x27;;
+        var regionX = &#x27;&#x27;;
+        var regionY = &#x27;&#x27;;
 
-      if (a.y1 &gt; b.cy &amp;&amp; a.y1 &lt; b.y2) { regionX = &#x27;N&#x27;; }
-      if (a.y2 &gt; b.y1 &amp;&amp; a.y2 &lt; b.cy) { regionX = &#x27;S&#x27;; }
-      if (a.x1 &gt; b.cx &amp;&amp; a.x1 &lt; b.x2) { regionY = &#x27;W&#x27;; }
-      if (a.x2 &gt; b.x1 &amp;&amp; a.x2 &lt; b.cx) { regionY = &#x27;E&#x27;; }
+        if (a.y1 &gt; b.cy &amp;&amp; a.y1 &lt; b.y2) { regionX = &#x27;N&#x27;; }
+        if (a.y2 &gt; b.y1 &amp;&amp; a.y2 &lt; b.cy) { regionX = &#x27;S&#x27;; }
+        if (a.x1 &gt; b.cx &amp;&amp; a.x1 &lt; b.x2) { regionY = &#x27;W&#x27;; }
+        if (a.x2 &gt; b.x1 &amp;&amp; a.x2 &lt; b.cx) { regionY = &#x27;E&#x27;; }
 
-      return (regionX + regionY) || &#x27;C&#x27;;
+        return (regionX + regionY) || &#x27;C&#x27;;
     };
 
+
     fn.calculate_overlapped_area_coords = function(a, b){
-      var x1 = Math.max(a.x1, b.x1);
-      var y1 = Math.max(a.y1, b.y1);
-      var x2 = Math.min(a.x2, b.x2);
-      var y2 = Math.min(a.y2, b.y2);
+        var x1 = Math.max(a.x1, b.x1);
+        var y1 = Math.max(a.y1, b.y1);
+        var x2 = Math.min(a.x2, b.x2);
+        var y2 = Math.min(a.y2, b.y2);
 
-      return $({
-          left: x1,
-          top: y1,
-          width : (x2 - x1),
-          height: (y2 - y1)
-        }).coords().get();
+        return $({
+            left: x1,
+            top: y1,
+             width : (x2 - x1),
+            height: (y2 - y1)
+          }).coords().get();
     };
 
+
     fn.calculate_overlapped_area = function(coords){
-      return (coords.width * coords.height);
+        return (coords.width * coords.height);
     };
 
+
     fn.manage_colliders_start_stop = function(new_colliders_coords, start_callback, stop_callback){
-      var last = this.last_colliders_coords;
+        var last = this.last_colliders_coords;
 
-      for (var i = 0, il = last.length; i &lt; il; i++) {
-          if ($.inArray(last[i], new_colliders_coords) === -1) {
-              start_callback.call(this, last[i]);
-          }
-      }
+        for (var i = 0, il = last.length; i &lt; il; i++) {
+            if ($.inArray(last[i], new_colliders_coords) === -1) {
+                start_callback.call(this, last[i]);
+            }
+        }
 
-      for (var j = 0, jl = new_colliders_coords.length; j &lt; jl; j++) {
-          if ($.inArray(new_colliders_coords[j], last) === -1) {
-              stop_callback.call(this, new_colliders_coords[j]);
-          }
+        for (var j = 0, jl = new_colliders_coords.length; j &lt; jl; j++) {
+            if ($.inArray(new_colliders_coords[j], last) === -1) {
+                stop_callback.call(this, new_colliders_coords[j]);
+            }
 
-      }
+        }
     };
 
+
     fn.find_collisions = function(player_data_coords){
-      var self = this;
-      var colliders_coords = [];
-      var colliders_data = [];
-      var $colliders = (this.colliders || this.$colliders);
-      var count = $colliders.length;
-      var player_coords = self.$element.coords().update(player_data_coords || false).get();
+        var self = this;
+        var colliders_coords = [];
+        var colliders_data = [];
+        var $colliders = (this.colliders || this.$colliders);
+        var count = $colliders.length;
+        var player_coords = self.$element.coords()
+                             .update(player_data_coords || false).get();
 
-      while(count--){
-        var $collider = self.$colliders ? $($colliders[count]) : $colliders[count];
-        var $collider_coords_ins = ($collider.isCoords) ?
-                $collider : $collider.coords();
-        var collider_coords = $collider_coords_ins.get();
-        var overlaps = self.overlaps(player_coords, collider_coords);
+        while(count--){
+          var $collider = self.$colliders ?
+                           $($colliders[count]) : $colliders[count];
+          var $collider_coords_ins = ($collider.isCoords) ?
+                  $collider : $collider.coords();
+          var collider_coords = $collider_coords_ins.get();
+          var overlaps = self.overlaps(player_coords, collider_coords);
 
-        if (!overlaps) {
-          continue;
+          if (!overlaps) {
+            continue;
+          }
+
+          var region = self.detect_overlapping_region(
+              player_coords, collider_coords);
+
+            &#x2F;&#x2F;todo: make this an option
+            if (region === &#x27;C&#x27;){
+                var area_coords = self.calculate_overlapped_area_coords(
+                    player_coords, collider_coords);
+                var area = self.calculate_overlapped_area(area_coords);
+                var collider_data = {
+                    area: area,
+                    area_coords : area_coords,
+                    region: region,
+                    coords: collider_coords,
+                    player_coords: player_coords,
+                    el: $collider
+                };
+
+                if (self.options.on_overlap) {
+                    self.options.on_overlap.call(this, collider_data);
+                }
+                colliders_coords.push($collider_coords_ins);
+                colliders_data.push(collider_data);
+            }
         }
 
-        var region = self.detect_overlapping_region(player_coords,
-             collider_coords);
-        &#x2F;&#x2F;todo: make this if customizable
-        if (region === &#x27;C&#x27;){
-            var area_coords = self.calculate_overlapped_area_coords(
-                 player_coords, collider_coords);
-            var area = self.calculate_overlapped_area(area_coords);
-            var collider_data = {
-                area: area,
-                area_coords : area_coords,
-                region: region,
-                coords: collider_coords,
-                player_coords: player_coords,
-                el: $collider
-            };
-
-            self.options.on_overlap.call(this, collider_data);
-            colliders_coords.push($collider_coords_ins);
-            colliders_data.push(collider_data);
+        if (self.options.on_overlap_stop || self.options.on_overlap_start) {
+            this.manage_colliders_start_stop(colliders_coords,
+                self.options.on_overlap_stop, self.options.on_overlap_start);
         }
 
-      }
+        this.last_colliders_coords = colliders_coords;
 
-      this.manage_colliders_start_stop(colliders_coords,
-          self.options.on_overlap_stop, self.options.on_overlap_start);
-
-      this.last_colliders_coords = colliders_coords;
-
-      return colliders_data;
+        return colliders_data;
     };
 
 
     fn.get_closest_colliders = function(player_data_coords){
-      var colliders = this.find_collisions(player_data_coords);
-      var min_area = 100;
-      colliders.sort(function(a, b){
+        var colliders = this.find_collisions(player_data_coords);
+        var min_area = 100;
+        colliders.sort(function(a, b){
+            if (a.area &lt;= min_area) {
+              return 1;
+            }
 
-          if (a.area &lt;= min_area) {
-            return 1;
-          }
+            &#x2F;* if colliders are being overlapped by the &quot;C&quot; (center) region,
+             * we have to set a lower index in the array to which they are placed
+             * above in the grid. *&#x2F;
+            if (a.region === &#x27;C&#x27; &amp;&amp; b.region === &#x27;C&#x27;) {
+                if (a.coords.y1 &lt; b.coords.y1 || a.coords.x1 &lt; b.coords.x1) {
+                    return - 1;
+                }else{
+                    return 1;
+                }
+            }
 
-          &#x2F;* if colliders are being overlapped by the &quot;C&quot; (center) region,
-           * we have to set a lower index in the array to which they are placed
-           * above in the grid. *&#x2F;
-          if (a.region === &#x27;C&#x27; &amp;&amp; b.region === &#x27;C&#x27;) {
-            if (a.coords.y1 &lt; b.coords.y1 || a.coords.x1 &lt; b.coords.x1) {
-                return - 1;
-            }else{
+            if (a.area &lt; b.area){
                 return 1;
             }
-          }
 
-          if (a.area &lt; b.area){
-             return 1;
-          }
-
-          return 1;
-      });
-      return colliders;
+            return 1;
+        });
+        return colliders;
     };
 
+
     &#x2F;&#x2F;jQuery adapter
     $.fn.collision = function(collider, options) {
-      return new Collision( this, collider, options );
+          return new Collision( this, collider, options );
     };
 
 
diff --git a/docs/files/src_jquery.coords.js.html b/docs/files/src_jquery.coords.js.html
index ef5dd34b99..a7fe8710dc 100644
--- a/docs/files/src_jquery.coords.js.html
+++ b/docs/files/src_jquery.coords.js.html
@@ -42,9 +42,25 @@
         <div id="api-tabview-panel">
             <ul id="api-classes" class="apis classes">
             
-                <li><a href="..&#x2F;classes/Collision.html">Collision</a></li>
+                <li><a href="..&#x2F;classes/Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects..html">Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</a></li>
             
-                <li><a href="..&#x2F;classes/Coords.html">Coords</a></li>
+                <li><a href="..&#x2F;classes/Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide..html">Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</a></li>
             
                 <li><a href="..&#x2F;classes/Draggable.html">Draggable</a></li>
             
@@ -103,10 +119,16 @@
 
 ;(function($, window, document, undefined){
     &#x2F;**
-    * Coords
-    *
     * @class Coords
-    * @param {HTMLElement|Object} obj HTMLElement or a literal Object with the left, top, width and height properties.
+    *
+    * Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+    * to simulate DOM elements on the screen.
+    * Coords is used by Gridster to create a faux grid with any DOM element can
+    * collide.
+    *
+    * @param {HTMLElement|Object} obj The jQuery HTMLElement or a object with: left,
+    * top, width and height properties.
+    * @return {Object} Coords instance.
     * @constructor
     *&#x2F;
     function Coords(obj) {
@@ -122,8 +144,10 @@
         return this;
     }
 
+
     var fn = Coords.prototype;
 
+
     fn.init = function(){
         this.set();
         this.original_coords = this.get();
@@ -181,6 +205,7 @@
         return this.coords;
     };
 
+
     &#x2F;&#x2F;jQuery adapter
     $.fn.coords = function() {
         if (this.data(&#x27;coords&#x27;) ) {
diff --git a/docs/files/src_jquery.draggable.js.html b/docs/files/src_jquery.draggable.js.html
index 01b39af04c..c87d7bac27 100644
--- a/docs/files/src_jquery.draggable.js.html
+++ b/docs/files/src_jquery.draggable.js.html
@@ -42,9 +42,25 @@
         <div id="api-tabview-panel">
             <ul id="api-classes" class="apis classes">
             
-                <li><a href="..&#x2F;classes/Collision.html">Collision</a></li>
+                <li><a href="..&#x2F;classes/Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects..html">Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</a></li>
             
-                <li><a href="..&#x2F;classes/Coords.html">Coords</a></li>
+                <li><a href="..&#x2F;classes/Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide..html">Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</a></li>
             
                 <li><a href="..&#x2F;classes/Draggable.html">Draggable</a></li>
             
@@ -107,24 +123,42 @@
         items: &#x27;.gs_w&#x27;,
         distance: 1,
         limit: true,
-        offset_left: 0,
-        drag: function(e){},
-        start : function(e, ui){},
-        stop : function(e){}
+        offset_left: 0
+        &#x2F;&#x2F; ,drag: function(e){},
+        &#x2F;&#x2F; start : function(e, ui){},
+        &#x2F;&#x2F; stop : function(e){}
     };
 
     var $body = $(document.body);
 
 
     &#x2F;**
-    * Draggable
-    *
     * @class Draggable
+    *
+    * @param {HTMLElement} el The HTMLelement that contains all the widgets
+    *  to be dragged.
+    * @param {Object} [options] An Object with all options you want to
+    *        overwrite:
+    *    @param {HTMLElement|String} [options.items] Define who will
+    *     be the draggable items. Can be a CSS Selector String or a
+    *     collection of HTMLElements.
+    *    @param {Number} [options.distance] Distance in pixels after mousedown
+    *     the mouse must move before dragging should start.
+    *    @param {Boolean} [options.limit] Constrains dragging to the width of
+    *     the container
+    *    @param {offset_left} [options.offset_left] Offset added to the item
+    *     that is being dragged.
+    *    @param {Number} [options.drag] Executes a callback when the mouse is
+    *     moved during the dragging.
+    *    @param {Number} [options.start] Executes a callback when the drag
+    *     starts.
+    *    @param {Number} [options.stop] Executes a callback when the drag stops.
+    * @return {Object} Returns &#x60;el&#x60;.
     * @constructor
     *&#x2F;
-    function Draggable(element, options) {
-      this.options = $.extend(defaults, options);
-      this.$container = $(element);
+    function Draggable(el, options) {
+      this.options = $.extend({}, defaults, options);
+      this.$container = $(el);
       this.$dragitems = $(this.options.items, this.$container);
       this.is_dragging = false;
       this.player_min_left = 0 + this.options.offset_left;
@@ -139,6 +173,7 @@
         this.enable();
     };
 
+
     fn.get_actual_pos = function($el) {
         var pos = $el.position();
         return pos;
@@ -154,6 +189,10 @@
 
 
     fn.drag_handler = function(e) {
+        if (e.which !== 1) {
+            return false;
+        };
+
         var self = this;
         var first = true;
         this.$player = $(e.currentTarget);
@@ -162,6 +201,7 @@
         this.mouse_init_pos = this.get_mouse_pos(e);
 
         $body.on(&#x27;mousemove.draggable&#x27;, function(mme){
+
             var mouse_actual_pos = self.get_mouse_pos(mme);
             var diff_x = Math.abs(mouse_actual_pos.left - self.mouse_init_pos.left);
             var diff_y = Math.abs(mouse_actual_pos.top - self.mouse_init_pos.top);
diff --git a/docs/files/src_jquery.gridster.js.html b/docs/files/src_jquery.gridster.js.html
index 4df4a9e481..42645e3f95 100644
--- a/docs/files/src_jquery.gridster.js.html
+++ b/docs/files/src_jquery.gridster.js.html
@@ -42,9 +42,25 @@
         <div id="api-tabview-panel">
             <ul id="api-classes" class="apis classes">
             
-                <li><a href="..&#x2F;classes/Collision.html">Collision</a></li>
+                <li><a href="..&#x2F;classes/Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects..html">Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</a></li>
             
-                <li><a href="..&#x2F;classes/Coords.html">Coords</a></li>
+                <li><a href="..&#x2F;classes/Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide..html">Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</a></li>
             
                 <li><a href="..&#x2F;classes/Draggable.html">Draggable</a></li>
             
@@ -109,7 +125,7 @@
         extra_rows: 0,
         extra_cols: 0,
         min_cols: 1,
-        min_rows: 10,
+        min_rows: 15,
         autogenerate_stylesheet: true,
         avoid_overlapped_widgets: true,
         serialize_params: function($w, wgd) {
@@ -127,7 +143,7 @@
 
     &#x2F;**
     * @class Gridster
-    * @uses Coords
+    * @uses Draggable
     * @uses Collision
     * @param {HTMLElement} el The HTMLelement that contains all the widgets.
     * @param {Object} [options] An Object with all options you want to
@@ -153,6 +169,9 @@
     *     &#x60;&lt;head&gt;&#x60; of the document. You can set this to false, and write
     *     your own CSS targeting rows and cols via data-attributes like so:
     *     &#x60;[data-col=&quot;1&quot;] { left: 10px; }&#x60;
+    *    @param {Boolean} [avoid_overlapped_widgets] Avoid that widgets loaded
+    *     from the DOM can be overlapped. It is helpful if the positions were
+    *     bad stored in the database or if there was any conflict.
     *    @param {Function} [options.serialize_params] Return the data you want
     *     for each widget in the serialization. Two arguments are passed:
     *     &#x60;$w&#x60;: the jQuery wrapped HTMLElement, and &#x60;wgd&#x60;: the grid
@@ -161,8 +180,8 @@
     *     Collision class you want to overwrite. See Collision docs for
     *     more info.
     *    @param {Object} [options.draggable] An Object with all options for
-    *     jQuery UI Draggable you want to overwrite. See
-    *     http:&#x2F;&#x2F;jqueryui.com&#x2F;demos&#x2F;draggable&#x2F; for more info.
+    *     Draggable class you want to overwrite. See Draggable docs for more
+    *     info.
     *
     * @constructor
     *&#x2F;
@@ -170,7 +189,7 @@
       this.options = $.extend(true, defaults, options);
       this.$el = $(el);
       this.$wrapper = this.$el.parent();
-      this.$widgets = this.$el.find(this.options.widget_selector).addClass(&#x27;gs_w&#x27;);
+      this.$widgets = $(this.options.widget_selector, this.$el).addClass(&#x27;gs_w&#x27;);
       this.widgets = [];
       this.$changed = $([]);
       this.wrapper_width = this.$wrapper.width();
@@ -203,7 +222,8 @@
     * @method enable
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
-    fn.disable = function(){
+    fn.disable = function() {
+        this.$wrapper.find(&#x27;.player-revert&#x27;).removeClass(&#x27;player-revert&#x27;);
         this.drag_api.disable();
         return this;
     }
@@ -215,7 +235,7 @@
     * @method enable
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
-    fn.enable = function(){
+    fn.enable = function() {
         this.drag_api.enable();
         return this;
     }
@@ -304,15 +324,17 @@
         var $el = el instanceof jQuery ? el : $(el);
         var wgd = $el.coords().grid;
 
+        this.cells_occupied_by_placeholder = {};
         this.$widgets = this.$widgets.not($el);
 
         var $nexts = this.widgets_below($el);
 
         this.remove_from_gridmap(wgd);
 
-        $el.fadeOut($.proxy(function(){
+        $el.fadeOut($.proxy(function() {
             $el.remove();
-            $nexts.each($.proxy(function(i, widget){
+
+            $nexts.each($.proxy(function(i, widget) {
                 this.move_widget_up( $(widget), wgd.size_y );
             }, this));
 
@@ -336,9 +358,9 @@
     fn.serialize = function($widgets) {
         $widgets || ($widgets = this.$widgets);
         var result = [];
-        $widgets.each($.proxy(function(i, widget){
-            result.push( this.options.serialize_params(
-                $(widget),$(widget).coords().grid ) );
+        $widgets.each($.proxy(function(i, widget) {
+            result.push(this.options.serialize_params(
+                $(widget), $(widget).coords().grid ) );
         }, this));
 
         return result;
@@ -346,7 +368,8 @@
 
 
     &#x2F;**
-    * Returns a serialized array of the widgets that have changed their position.
+    * Returns a serialized array of the widgets that have changed their
+    *  position.
     *
     * @method serialize_changed
     * @return {Array} Returns an Array of Objects with the data specified in
@@ -376,7 +399,7 @@
 
         if (this.options.avoid_overlapped_widgets &amp;&amp;
             !this.can_move_to(
-             { size_x: wgd.size_x, size_y: wgd.size_y }, wgd.col, wgd.row)
+             {size_x: wgd.size_x, size_y: wgd.size_y}, wgd.col, wgd.row)
         ) {
             wgd = this.next_position(wgd.size_x, wgd.size_y);
             wgd.el = $el;
@@ -429,7 +452,7 @@
     *  to update in the mapped array.
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
-    fn.remove_from_gridmap = function(grid_data){
+    fn.remove_from_gridmap = function(grid_data) {
         return this.update_widget_position(grid_data, false);
     };
 
@@ -444,12 +467,12 @@
     *  position .
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
-    fn.add_to_gridmap = function(grid_data, value){
+    fn.add_to_gridmap = function(grid_data, value) {
         this.update_widget_position(grid_data, value || grid_data.el);
 
         if (grid_data.el) {
             var $widgets = this.widgets_below(grid_data.el);
-            $widgets.each($.proxy(function(i, widget){
+            $widgets.each($.proxy(function(i, widget) {
                 this.move_widget_up( $(widget));
             }, this));
         }
@@ -457,8 +480,9 @@
 
 
     &#x2F;**
-    * Make widgets draggable. It Wraps the jQuery UI Draggable Plugin.
+    * Make widgets draggable.
     *
+    * @uses Draggable
     * @method draggable
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
@@ -468,7 +492,9 @@
             offset_left: this.options.widget_margins[0],
             items: &#x27;.gs_w&#x27;,
             start: function(event, ui) {
-                self.$widgets.filter(&#x27;.player-revert&#x27;).removeClass(&#x27;player-revert&#x27;);
+                self.$widgets.filter(&#x27;.player-revert&#x27;)
+                    .removeClass(&#x27;player-revert&#x27;);
+
                 self.$player = $(this);
                 self.$helper = self.options.draggable.helper === &#x27;clone&#x27; ?
                     $(ui.helper) : self.$player;
@@ -498,7 +524,6 @@
     * @method on_start_drag
     * @param {Event} The original browser event
     * @param {Object} A prepared ui object.
-    *  See http:&#x2F;&#x2F;jqueryui.com&#x2F;demos&#x2F;draggable&#x2F; for more info.
     *&#x2F;
     fn.on_start_drag = function(event, ui) {
 
@@ -550,14 +575,15 @@
     * @method on_drag
     * @param {Event} The original browser event
     * @param {Object} A prepared ui object.
-    *  See http:&#x2F;&#x2F;jqueryui.com&#x2F;demos&#x2F;draggable&#x2F; for more info.
     *&#x2F;
     fn.on_drag = function(event, ui) {
         var abs_offset = {
             left: ui.position.left + this.baseX,
             top: ui.position.top + this.baseY
         }
-        this.colliders_data = this.collision_api.get_closest_colliders(abs_offset);
+
+        this.colliders_data = this.collision_api.get_closest_colliders(
+            abs_offset);
 
         this.on_overlapped_column_change(
             this.on_start_overlapping_column,
@@ -587,10 +613,10 @@
     * @method on_stop_drag
     * @param {Event} The original browser event
     * @param {Object} A prepared ui object.
-    *  See http:&#x2F;&#x2F;jqueryui.com&#x2F;demos&#x2F;draggable&#x2F; for more info.
     *&#x2F;
     fn.on_stop_drag = function(event, ui) {
-        this.$helper.add(this.$player).add(this.$wrapper).removeClass(&#x27;dragging&#x27;);
+        this.$helper.add(this.$player).add(this.$wrapper)
+            .removeClass(&#x27;dragging&#x27;);
 
         ui.position.left = ui.position.left + this.baseX;
         ui.position.top = ui.position.top + this.baseY;
@@ -606,14 +632,14 @@
             this.on_stop_overlapping_row
         );
 
-        this.$player
-        .addClass(&#x27;player-revert&#x27;).removeClass(&#x27;player&#x27;).attr({
-            &#x27;data-col&#x27;: this.placeholder_grid_data.col,
-            &#x27;data-row&#x27;: this.placeholder_grid_data.row
-        }).css({
-            &#x27;left&#x27;: &#x27;&#x27;,
-            &#x27;top&#x27;: &#x27;&#x27;
-        });
+        this.$player.addClass(&#x27;player-revert&#x27;).removeClass(&#x27;player&#x27;)
+            .attr({
+                &#x27;data-col&#x27;: this.placeholder_grid_data.col,
+                &#x27;data-row&#x27;: this.placeholder_grid_data.row
+            }).css({
+                &#x27;left&#x27;: &#x27;&#x27;,
+                &#x27;top&#x27;: &#x27;&#x27;
+            });
 
         this.$changed = this.$changed.add(this.$player);
 
@@ -782,7 +808,7 @@
         var wgd_can_go_up = [];
         var wgd_can_not_go_up = [];
 
-        $widgets.each($.proxy(function(i, w){
+        $widgets.each($.proxy(function(i, w) {
             var $w = $(w);
             var wgd = $w.coords().grid;
             if (this.can_go_widget_up(wgd)) {
@@ -811,7 +837,7 @@
     * @return {Array} Returns the array sorted.
     *&#x2F;
     fn.sort_by_row_asc = function(widgets) {
-        widgets = widgets.sort(function(a, b){
+        widgets = widgets.sort(function(a, b) {
            if (a.row &gt; b.row) {
                return 1;
            }
@@ -831,7 +857,7 @@
     * @return {Array} Returns the array sorted.
     *&#x2F;
     fn.sort_by_row_and_col_asc = function(widgets) {
-        widgets = widgets.sort(function(a, b){
+        widgets = widgets.sort(function(a, b) {
            if (a.row &gt; b.row || a.row == b.row &amp;&amp; a.col &gt; b.col) {
                return 1;
            }
@@ -851,7 +877,7 @@
     * @return {Array} Returns the array sorted.
     *&#x2F;
     fn.sort_by_col_asc = function(widgets) {
-        widgets = widgets.sort(function(a, b){
+        widgets = widgets.sort(function(a, b) {
            if (a.col &gt; b.col) {
                return 1;
            }
@@ -871,8 +897,8 @@
     * @return {Array} Returns the array sorted.
     *&#x2F;
     fn.sort_by_row_desc = function(widgets) {
-        widgets = widgets.sort(function(a, b){
-            if (a.row + a.size_y &lt; b.row + b.size_y){
+        widgets = widgets.sort(function(a, b) {
+            if (a.row + a.size_y &lt; b.row + b.size_y) {
                 return 1;
             }
            return -1;
@@ -893,7 +919,7 @@
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
     fn.manage_movements = function($widgets, to_col, to_row) {
-        $.each($widgets, $.proxy(function(i, w){
+        $.each($widgets, $.proxy(function(i, w) {
             var wgd = w;
             var $w = wgd.el;
 
@@ -968,7 +994,7 @@
     * @return {Boolean} Returns true or false.
     *&#x2F;
     fn.is_placeholder_in = function(col, row) {
-        var c = this.cells_occupied_by_placeholder || [];
+        var c = this.cells_occupied_by_placeholder || {};
         return this.is_placeholder_in_col(col) &amp;&amp; $.inArray(row, c.rows) &gt;= 0;
     };
 
@@ -1077,9 +1103,9 @@
         var cells = this.cells_occupied_by_player;
         var $widgets = $([]);
 
-        $.each(cells.cols, $.proxy(function(i, col){
-            $.each(cells.rows, $.proxy(function(i, row){
-                if(this.is_widget(col, row)){
+        $.each(cells.cols, $.proxy(function(i, col) {
+            $.each(cells.rows, $.proxy(function(i, row) {
+                if(this.is_widget(col, row)) {
                     $widgets = $widgets.add(this.gridmap[col][row]);
                 }
             }, this));
@@ -1120,8 +1146,6 @@
         this.placeholder_grid_data.col = col;
         this.placeholder_grid_data.row = row;
 
-
-
         this.cells_occupied_by_placeholder = this.get_cells_occupied(
             this.placeholder_grid_data);
 
@@ -1131,9 +1155,9 @@
         });
 
         if (moved_down || changed_column) {
-            $nexts.each($.proxy(function(i, widget){
+            $nexts.each($.proxy(function(i, widget) {
                 this.move_widget_up(
-                    $(widget), this.placeholder_grid_data.col - col + phgd.size_y);
+                 $(widget), this.placeholder_grid_data.col - col + phgd.size_y);
             }, this));
         }
 
@@ -1158,12 +1182,12 @@
 
         &#x2F;* generate an array with columns as index and array with upper rows
          * empty as value *&#x2F;
-        this.for_each_column_occupied(widget_grid_data, function(tcol){
+        this.for_each_column_occupied(widget_grid_data, function(tcol) {
             var grid_col = this.gridmap[tcol];
             var r = p_bottom_row + 1;
             upper_rows[tcol] = [];
 
-            while (--r &gt; 0){
+            while (--r &gt; 0) {
                 if (this.is_empty(tcol, r) || this.is_player(tcol, r) ||
                     this.is_widget(tcol, r) &amp;&amp;
                     grid_col[r].is($widgets_under_player)
@@ -1206,7 +1230,7 @@
 
         &#x2F;* generate an array with columns as index and array with upper rows
          * empty as value *&#x2F;
-        this.for_each_column_occupied(widget_grid_data, function(tcol){
+        this.for_each_column_occupied(widget_grid_data, function(tcol) {
             var grid_col = this.gridmap[tcol];
             upper_rows[tcol] = [];
 
@@ -1217,7 +1241,9 @@
                     break;
                 }
 
-                if (!this.is_player(tcol, r) &amp;&amp;!this.is_placeholder_in(tcol, r)) {
+                if (!this.is_player(tcol, r) &amp;&amp;
+                    !this.is_placeholder_in(tcol, r)
+                ) {
                     upper_rows[tcol].push(r);
                 }
 
@@ -1253,7 +1279,7 @@
     * @return {Number|Boolean} Returns the upper row valid from the &#x60;upper_rows&#x60;
     *  for the widget in question.
     *&#x2F;
-    fn.get_valid_rows = function(widget_grid_data, upper_rows, min_row){
+    fn.get_valid_rows = function(widget_grid_data, upper_rows, min_row) {
         var p_top_row = widget_grid_data.row;
         var p_bottom_row = widget_grid_data.row + widget_grid_data.size_y - 1;
         var size_y = widget_grid_data.size_y;
@@ -1262,7 +1288,7 @@
 
         while (++r &lt;= p_bottom_row ) {
             var common = true;
-            $.each(upper_rows, function(col, rows){
+            $.each(upper_rows, function(col, rows) {
                 if (rows &amp;&amp; $.inArray(r, rows) === -1) {
                     common = false;
                 }
@@ -1331,8 +1357,8 @@
         var rows_from_bottom = this.cells_occupied_by_player.rows.slice(0);
         rows_from_bottom.reverse();
 
-        $.each(this.cells_occupied_by_player.cols, $.proxy(function(i, col){
-            $.each(rows_from_bottom, $.proxy(function(i, row){
+        $.each(this.cells_occupied_by_player.cols, $.proxy(function(i, col) {
+            $.each(rows_from_bottom, $.proxy(function(i, row) {
                 &#x2F;&#x2F; if there is a widget in the player position
                 if (!this.gridmap[col]) { return true; } &#x2F;&#x2F;next iteration
                 var $w = this.gridmap[col][row];
@@ -1419,7 +1445,8 @@
     * if they can.
     *
     * @method move_widget_to
-    * @param {HTMLElement} $widget The jQuery wrapped HTMLElement of the widget is going to be moved.
+    * @param {HTMLElement} $widget The jQuery wrapped HTMLElement of the
+    * widget is going to be moved.
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
     fn.move_widget_to = function($widget, row) {
@@ -1442,12 +1469,12 @@
         this.$changed = this.$changed.add($widget);
 
 
-        $next_widgets.each(function(i, widget){
+        $next_widgets.each(function(i, widget) {
             var $w = $(widget);
             var wgd = $w.coords().grid;
             var can_go_up = self.can_go_widget_up(wgd);
 
-            if (can_go_up &amp;&amp; can_go_up !== wgd.row){
+            if (can_go_up &amp;&amp; can_go_up !== wgd.row) {
                 self.move_widget_to($w, can_go_up);
             }
         });
@@ -1473,12 +1500,14 @@
 
         if (!this.can_go_up($widget)) { return false; } &#x2F;&#x2F;break;
 
-        this.for_each_column_occupied(el_grid_data, function(col){
+        this.for_each_column_occupied(el_grid_data, function(col) {
             &#x2F;&#x2F; can_go_up
             if ($.inArray($widget, moved) === -1) {
                 var widget_grid_data = $widget.coords().grid;
                 var next_row = actual_row - y_units;
-                next_row = this.can_go_up_to_row(widget_grid_data, col, next_row);
+                next_row = this.can_go_up_to_row(
+                    widget_grid_data, col, next_row);
+
                 if (!next_row) {
                     return true;
                 }
@@ -1493,7 +1522,7 @@
 
                 moved.push($widget);
 
-                $next_widgets.each($.proxy(function(i, widget){
+                $next_widgets.each($.proxy(function(i, widget) {
                     this.move_widget_up($(widget), y_units);
                 }, this));
             }
@@ -1506,7 +1535,8 @@
     * Move down the specified widget and all below it.
     *
     * @method move_widget_down
-    * @param {HTMLElement} $widget The jQuery object representing the widget you want to move.
+    * @param {HTMLElement} $widget The jQuery object representing the widget
+    *  you want to move.
     * @param {Number} The number of cells that the widget has to move.
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
@@ -1526,7 +1556,7 @@
 
             this.remove_from_gridmap(widget_grid_data);
 
-            $next_widgets.each($.proxy(function(i, widget){
+            $next_widgets.each($.proxy(function(i, widget) {
                 var $w = $(widget);
                 var wd = $w.coords().grid;
                 var tmp_y = this.displacement_diff(
@@ -1566,13 +1596,14 @@
         var actual_row = widget_grid_data.row;
         var r;
 
-        &#x2F;&#x2F;generate an array with columns as index and array with upper rows empty in the column
-        this.for_each_column_occupied(widget_grid_data, function(tcol){
+        &#x2F;* generate an array with columns as index and array with
+         * upper rows empty in the column *&#x2F;
+        this.for_each_column_occupied(widget_grid_data, function(tcol) {
             var grid_col = ga[tcol];
             urc[tcol] = [];
 
             r = actual_row;
-            while (r--){
+            while (r--) {
                 if (this.is_empty(tcol, r) &amp;&amp;
                     !this.is_placeholder_in(tcol, r)
                 ) {
@@ -1591,7 +1622,8 @@
 
         if (!result) { return false; }
 
-        &#x2F;&#x2F;get common rows starting from upper position in all the columns widget occupies
+        &#x2F;* get common rows starting from upper position in all the columns
+         * that widget occupies *&#x2F;
         r = row;
         for (r = 1; r &lt; actual_row; r++) {
             var common = true;
@@ -1617,7 +1649,7 @@
         var diffs = [];
         var parent_max_y = parent_bgd.row + parent_bgd.size_y;
 
-        this.for_each_column_occupied(widget_grid_data, function(col){
+        this.for_each_column_occupied(widget_grid_data, function(col) {
             var temp_y_units = 0;
 
             for (var r = parent_max_y; r &lt; actual_row; r++) {
@@ -1650,9 +1682,9 @@
         var next_row = el_grid_data.row + el_grid_data.size_y - 1;
         var $nexts = $([]);
 
-        this.for_each_column_occupied(el_grid_data, function(col){
+        this.for_each_column_occupied(el_grid_data, function(col) {
             self.for_each_widget_below(col, next_row,
-                function(tcol, trow){
+                function(tcol, trow) {
                     if (!self.is_player(this) &amp;&amp;
                         $.inArray(this, $nexts) === -1) {
                             $nexts = $nexts.add(this);
@@ -1704,7 +1736,8 @@
         var result = true;
         if (initial_row === 1) { return false; }
 
-        this.for_each_column_occupied(el_grid_data, function(col){
+        this.for_each_column_occupied(el_grid_data, function(col) {
+            var $w = this.is_widget(col, prev_row);
             if (this.is_occupied(col, prev_row) ||
                 this.is_player(col, prev_row) ||
                 this.is_placeholder_in(col, prev_row)
@@ -1721,8 +1754,8 @@
 
     &#x2F;**
     * Check if it&#x27;s possible to move a widget to a specific col&#x2F;row. It takes
-    * into account the dimensions (&#x60;size_y&#x60; and &#x60;size_x&#x60; attrs. of the grid coords
-    *  object) the widget occupies.
+    * into account the dimensions (&#x60;size_y&#x60; and &#x60;size_x&#x60; attrs. of the grid
+    *  coords object) the widget occupies.
     *
     * @method can_move_to
     * @param {Object} widget_grid_data The grid coords object that represents
@@ -1748,7 +1781,7 @@
             return false;
         };
 
-        this.for_each_cell_occupied(future_wd, function(tcol, trow){
+        this.for_each_cell_occupied(future_wd, function(tcol, trow) {
             var $tw = this.is_widget(tcol, trow);
             if ($tw &amp;&amp; (!widget_grid_data.el || $tw.is($w))) {
                 result = false;
@@ -1760,7 +1793,8 @@
 
 
     &#x2F;**
-    * Given the leftmost column returns all columns that are overlapping with the player.
+    * Given the leftmost column returns all columns that are overlapping
+    *  with the player.
     *
     * @method get_targeted_columns
     * @param {Number} [from_col] The leftmost column.
@@ -1834,8 +1868,8 @@
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
     fn.for_each_cell_occupied = function(grid_data, callback) {
-        this.for_each_column_occupied(grid_data, function(col){
-            this.for_each_row_occupied(grid_data, function(row){
+        this.for_each_column_occupied(grid_data, function(col) {
+            this.for_each_row_occupied(grid_data, function(row) {
                 callback.call(this, col, row);
             });
         });
@@ -1869,7 +1903,8 @@
     * @method for_each_row_occupied
     * @param {Object} el_grid_data The grid coords object that represents
     *  the widget.
-    * @param {Function} callback The function to execute on each column iteration. The row number is passed as first argument.
+    * @param {Function} callback The function to execute on each column
+    *  iteration. The row number is passed as first argument.
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
     fn.for_each_row_occupied = function(el_grid_data, callback) {
@@ -1935,7 +1970,8 @@
     * @param {Number} col The column to start iterating.
     * @param {Number} row The row to start iterating.
     * @param {Function} callback The function to execute on each widget
-    * iteration. The value of &#x60;this&#x60; inside the function is the jQuery wrapped HTMLElement.
+    *  iteration. The value of &#x60;this&#x60; inside the function is the jQuery
+    *  wrapped HTMLElement.
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
     fn.for_each_widget_above = function(col, row, callback) {
@@ -1951,7 +1987,8 @@
     * @param {Number} col The column to start iterating.
     * @param {Number} row The row to start iterating.
     * @param {Function} callback The function to execute on each widget
-    * iteration. The value of &#x60;this&#x60; inside the function is the jQuery wrapped HTMLElement.
+    *  iteration. The value of &#x60;this&#x60; inside the function is the jQuery wrapped
+    *  HTMLElement.
     * @return {Class} Returns the instance of the Gridster Class.
     *&#x2F;
     fn.for_each_widget_below = function(col, row, callback) {
@@ -1992,14 +2029,13 @@
     };
 
 
-
     fn.get_widgets_from = function(col, row) {
         var ga = this.gridmap;
         var $widgets = $();
 
         if (col) {
             $widgets = $widgets.add(
-                this.$widgets.filter(function(){
+                this.$widgets.filter(function() {
                     var tcol = $(this).attr(&#x27;data-col&#x27;);
                     return (tcol == col || tcol &gt; col);
                 })
@@ -2008,7 +2044,7 @@
 
         if (row) {
             $widgets = $widgets.add(
-                this.$widgets.filter(function(){
+                this.$widgets.filter(function() {
                     var trow = $(this).attr(&#x27;data-row&#x27;);
                     return (trow == row || trow &gt; row);
                 })
@@ -2028,7 +2064,6 @@
     fn.set_dom_grid_height = function() {
         var r = this.get_highest_occupied_cell().row;
         this.$el.css(&#x27;height&#x27;, r * this.min_widget_height);
-        &#x2F;&#x2F; this.$widgets.draggable(&quot;option&quot;, &quot;containment&quot;, this.$el);
         return this;
     };
 
@@ -2053,11 +2088,14 @@
         opts.cols || (opts.cols = this.cols);
         opts.rows || (opts.rows = this.rows);
         opts.namespace || (opts.namespace = &#x27;&#x27;);
-        opts.widget_base_dimensions || (opts.widget_base_dimensions = this.options.widget_base_dimensions);
-        opts.widget_margins || (opts.widget_margins = this.options.widget_margins);
-
-        opts.min_widget_width = (opts.widget_margins[0] * 2) + opts.widget_base_dimensions[0];
-        opts.min_widget_height = (opts.widget_margins[1] * 2) + opts.widget_base_dimensions[1];
+        opts.widget_base_dimensions ||
+            (opts.widget_base_dimensions = this.options.widget_base_dimensions);
+        opts.widget_margins ||
+            (opts.widget_margins = this.options.widget_margins);
+        opts.min_widget_width = (opts.widget_margins[0] * 2) +
+            opts.widget_base_dimensions[0];
+        opts.min_widget_height = (opts.widget_margins[1] * 2) +
+            opts.widget_base_dimensions[1];
 
         var serialized_opts = $.param(opts);
         &#x2F;&#x2F; don&#x27;t duplicate stylesheets for the same configuration
@@ -2069,27 +2107,31 @@
 
         &#x2F;* generate CSS styles for cols *&#x2F;
         for (i = opts.cols + extra_cells; i &gt;= 0; i--) {
-            styles += opts.namespace + &#x27; [data-col=&quot;&#x27;+ (i + 1) +&#x27;&quot;] { left: &#x27; +
-                      ((i * opts.widget_base_dimensions[0]) + (i *opts.widget_margins[0] ) + ((i+1) * opts.widget_margins[0])) +
-                      &#x27;px;} &#x27;;
+            styles += (opts.namespace + &#x27; [data-col=&quot;&#x27;+ (i + 1) + &#x27;&quot;] { left:&#x27; +
+                ((i * opts.widget_base_dimensions[0]) +
+                (i * opts.widget_margins[0]) +
+                ((i + 1) * opts.widget_margins[0])) + &#x27;px;} &#x27;);
         }
 
         &#x2F;* generate CSS styles for rows *&#x2F;
         for (i = opts.rows + extra_cells; i &gt;= 0; i--) {
-            styles += opts.namespace + &#x27; [data-row=&quot;&#x27; + (i + 1) + &#x27;&quot;] { top: &#x27; +
-                      ((i * opts.widget_base_dimensions[1]) + (i * opts.widget_margins[1]) + ((i+1) * opts.widget_margins[1]) ) +
-                      &#x27;px;} &#x27;;
+            styles += (opts.namespace + &#x27; [data-row=&quot;&#x27; + (i + 1) + &#x27;&quot;] { top:&#x27; +
+                ((i * opts.widget_base_dimensions[1]) +
+                (i * opts.widget_margins[1]) +
+                ((i + 1) * opts.widget_margins[1]) ) + &#x27;px;} &#x27;);
         }
 
 
         for (var y = 1; y &lt; max_size_y; y++) {
-            styles += opts.namespace + &#x27; [data-sizey=&quot;&#x27; + (y) + &#x27;&quot;] { height: &#x27; +
-                      (y * opts.widget_base_dimensions[1] + (y-1)*(opts.widget_margins[1]*2)) + &#x27;px;}&#x27;;
+            styles += (opts.namespace + &#x27; [data-sizey=&quot;&#x27; + y + &#x27;&quot;] { height:&#x27; +
+                (y * opts.widget_base_dimensions[1] +
+                (y - 1) * (opts.widget_margins[1] * 2)) + &#x27;px;}&#x27;);
         }
 
         for (var x = 1; x &lt; max_size_x; x++) {
-            styles += opts.namespace + &#x27; [data-sizex=&quot;&#x27; + (x) + &#x27;&quot;] { width: &#x27; +
-                    (x * opts.widget_base_dimensions[0] + (x-1)*(opts.widget_margins[0]*2)) + &#x27;px;}&#x27;;
+            styles += (opts.namespace + &#x27; [data-sizex=&quot;&#x27; + x + &#x27;&quot;] { width:&#x27; +
+                (x * opts.widget_base_dimensions[0] +
+                (x - 1) * (opts.widget_margins[0] * 2)) + &#x27;px;}&#x27;);
         }
 
         return this.add_style_tag(styles);
@@ -2103,7 +2145,7 @@
     * @param {String} css The styles to apply.
     * @return {Object} Returns the instance of the Gridster class.
     *&#x2F;
-    fn.add_style_tag = function(css){
+    fn.add_style_tag = function(css) {
       var d = document;
       var tag = d.createElement(&#x27;style&#x27;);
 
@@ -2167,7 +2209,7 @@
         this.baseX = ($(window).width() - aw) &#x2F; 2;
         this.baseY = this.$wrapper.offset().top;
 
-        $.each(this.faux_grid, $.proxy(function(i, coords){
+        $.each(this.faux_grid, $.proxy(function(i, coords) {
             this.faux_grid[i] = coords.update({
                 left: this.baseX + (coords.data.col -1) * this.min_widget_width,
                 top: this.baseY + (coords.data.row -1) * this.min_widget_height
@@ -2186,7 +2228,7 @@
     * @return {Object} Returns the instance of the Gridster class.
     *&#x2F;
     fn.get_widgets_from_DOM = function() {
-        this.$widgets.each($.proxy(function(i, widget){
+        this.$widgets.each($.proxy(function(i, widget) {
             this.register_widget($(widget));
         }, this));
         return this;
diff --git a/docs/index.html b/docs/index.html
index b51bc488fc..2b30280325 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -42,9 +42,25 @@
         <div id="api-tabview-panel">
             <ul id="api-classes" class="apis classes">
             
-                <li><a href=".&#x2F;classes/Collision.html">Collision</a></li>
+                <li><a href=".&#x2F;classes/Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects..html">Collision
+
+Detects collisions between a DOM element against other DOM elements or
+Coords objects.</a></li>
             
-                <li><a href=".&#x2F;classes/Coords.html">Coords</a></li>
+                <li><a href=".&#x2F;classes/Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide..html">Coords
+
+Creates objects with coordinates (x1, y1, x2, y2, cx, cy, width, height)
+to simulate DOM elements on the screen.
+Coords is used by Gridster to create a faux grid with any DOM element can
+collide.</a></li>
             
                 <li><a href=".&#x2F;classes/Draggable.html">Draggable</a></li>