diff --git a/dist/jquery.gridster.css b/dist/jquery.gridster.css
index 82117d0a8b..36923624c3 100644
--- a/dist/jquery.gridster.css
+++ b/dist/jquery.gridster.css
@@ -1,4 +1,4 @@
-/*! gridster.js - v0.1.0 - 2012-07-19
+/*! gridster.js - v0.1.0 - 2012-07-20
 * https://github.com/ducksboard/gridster.js
 * Copyright (c) 2012 ducksboard; Licensed MIT, GPL */
 
diff --git a/dist/jquery.gridster.js b/dist/jquery.gridster.js
index af3c2174ce..a1cab8a170 100644
--- a/dist/jquery.gridster.js
+++ b/dist/jquery.gridster.js
@@ -1,4 +1,4 @@
-/*! gridster.js - v0.1.0 - 2012-07-19
+/*! gridster.js - v0.1.0 - 2012-07-20
 * https://github.com/ducksboard/gridster.js
 * Copyright (c) 2012 ducksboard; Licensed MIT, GPL */
 
@@ -484,8 +484,8 @@
         }
 
         if (valid_pos.length) {
-            var next_position = this.sort_by_row_asc(valid_pos);
-            next_position = this.sort_by_row_asc(next_position)[0];
+            var next_position = this.sort_by_row_desc(valid_pos);
+            next_position = this.sort_by_col_asc(next_position)[0];
             return next_position;
         }
         return false;
@@ -652,16 +652,19 @@
                     $(ui.helper) : self.$player;
 
                 self.on_start_drag.call(self, event, ui);
+                self.$el.trigger('gridster:dragstart');
             },
             stop: function(event, ui) {
                 self.on_stop_drag.call(self, ui);
+                self.$el.trigger('gridster:dragstop');
             },
             drag: throttle(function(event, ui) {
                 self.on_drag.call(self, event, ui);
+                self.$el.trigger('gridster:drag');
             }, 100, true)
           });
 
-      this.$widgets.draggable(draggable_options);
+        this.$widgets.draggable(draggable_options);
 
       return this;
     };
@@ -1117,7 +1120,8 @@
     * @return {Boolean} Returns true or false.
     */
     fn.is_placeholder_in_col = function(col) {
-        return $.inArray(col, this.cells_occupied_by_placeholder.cols) >= 0;
+        var c = this.cells_occupied_by_placeholder || [];
+        return $.inArray(col, c.cols) >= 0;
     };
 
 
@@ -1866,12 +1870,11 @@
             col: col,
             row: row
         };
-        var cells_occupied_by_w = this.get_cells_occupied(widget_grid_data);
         var result = true;
 
         this.for_each_cell_occupied(future_wd, function(tcol, trow){
             var $tw = this.is_widget(tcol, trow);
-            if ($tw && !$tw.is($w)) {
+            if ($tw && (!widget_grid_data.el || $tw.is($w))) {
                 result = false;
             }
         });
diff --git a/dist/jquery.gridster.min.css b/dist/jquery.gridster.min.css
index 40ffed021c..332f0cacd5 100644
--- a/dist/jquery.gridster.min.css
+++ b/dist/jquery.gridster.min.css
@@ -1,3 +1,3 @@
-/*! gridster.js - v0.1.0 - 2012-07-19
+/*! gridster.js - v0.1.0 - 2012-07-20
 * 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;background:rgba(0,0,0,.23)}.ready .gs_w:not(.player):not(.preview-holder):not(.ui-draggable-dragging){-webkit-transition:left .3s,top .3s;-moz-transition:left .3s,top .3s;-o-transition:left .3s,top .3s}.gridster.dragging .ui-sortable-helper{z-index:9}.gridster .preview-holder{border:2px dashed #333;border-radius:5px;z-index:1;background:#FFF;position:absolute}.gridster .ui-draggable-dragging{z-index:10!important}
\ No newline at end of file
diff --git a/dist/jquery.gridster.min.js b/dist/jquery.gridster.min.js
index 8c7f7a7e68..a7b2fa3ba7 100644
--- a/dist/jquery.gridster.min.js
+++ b/dist/jquery.gridster.min.js
@@ -1,4 +1,4 @@
-/*! gridster.js - v0.1.0 - 2012-07-19
+/*! gridster.js - v0.1.0 - 2012-07-20
 * 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(){var a=this.el;a&&(this.data=a.offset(),this.data.width||(this.data.width=a.width()),this.data.height||(this.data.height=a.height()));var b=this.data;return this.coords.x1=b.left,this.coords.y1=b.top,this.coords.x2=b.left+b.width,this.coords.y2=b.top+b.height,this.coords.cx=b.left+b.width/2,this.coords.cy=b.top+b.height/2,this.coords.width=b.width,this.coords.height=b.height,this.coords.el=a||!1,this},f.update=function(b){if(!b&&!this.el)return this;if(b){var c=a.extend(this.data,b);this.data=c}return this.set(),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.$element):this.colliders=a(c),this.init()}var e={colliders_context:c.body,on_overlap:function(a){},on_overlap_start:function(a){},on_overlap_stop:function(a){}},g=f.prototype;g.init=function(){this.find_collisions()},g.overlaps=function(a,b){var c=!1,d=!1;if(b.x1>=a.x1&&b.x1<=a.x2||b.x2>=a.x1&&b.x2<=a.x2||a.x1>=b.x1&&a.x2<=b.x2)c=!0;if(b.y1>=a.y1&&b.y1<=a.y2||b.y2>=a.y1&&b.y2<=a.y2||a.y1>=b.y1&&a.y2<=b.y2)d=!0;return c&&d},g.detect_overlapping_region=function(a,b){var c="",d="";return a.y1>b.cy&&a.y1<b.y2&&(c="N"),a.y2>b.y1&&a.y2<b.cy&&(c="S"),a.x1>b.cx&&a.x1<b.x2&&(d="W"),a.x2>b.x1&&a.x2<b.cx&&(d="E"),c+d||"C"},g.calculate_overlapped_area_coords=function(b,c){var d=Math.max(b.x1,c.x1),e=Math.max(b.y1,c.y1),f=Math.min(b.x2,c.x2),g=Math.min(b.y2,c.y2);return a({left:d,top:e,width:f-d,height:g-e}).coords().get()},g.calculate_overlapped_area=function(a){return a.width*a.height},g.manage_colliders_start_stop=function(b,c,d){var e=this.last_colliders_coords;for(var f=0,g=e.length;f<g;f++)a.inArray(e[f],b)===-1&&c.call(this,e[f]);for(var h=0,i=b.length;h<i;h++)a.inArray(b[h],e)===-1&&d.call(this,b[h])},g.find_collisions=function(){var b=this,c=[],d=[],e=this.colliders||this.$colliders,f=e.length;while(f--){var g=b.$colliders?a(e[f]):e[f],h=b.$element.coords().update().get(),i=g.isCoords?g.update():g.coords(),j=i.get(),k=b.overlaps(h,j);if(!k)continue;var l=b.detect_overlapping_region(h,j);if(l==="C"){var m=b.calculate_overlapped_area_coords(h,j),n=b.calculate_overlapped_area(m),o={area:n,area_coords:m,region:l,coords:j,player_coords:h,el:g};b.options.on_overlap.call(this,o),c.push(i),d.push(o)}}return this.manage_colliders_start_stop(c,b.options.on_overlap_stop,b.options.on_overlap_start),this.last_colliders_coords=c,d},g.get_closest_colliders=function(){var a=this.find_collisions(),b=100;return a.sort(function(a,c){return a.area<=b?1:a.region==="C"&&c.region==="C"?a.coords.y1<c.coords.y1||a.coords.x1<c.coords.x1?-1:1:a.area<c.area?1:1}),a},a.fn.collision=function(a,b){return new f(this,a,b)}}(jQuery,window,document),function(a,b,c,d){function h(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.$wrapper.width(),this.min_widget_width=this.options.widget_margins[0]*2+this.options.widget_base_dimensions[0],this.min_widget_height=this.options.widget_margins[1]*2+this.options.widget_base_dimensions[1],this.init()}var e={widget_selector:"> li",widget_margins:[10,10],widget_base_dimensions:[400,225],extra_rows:0,extra_cols:0,min_cols:1,min_rows:10,autogenerate_stylesheet:!0,serialize_params:function(a,b){return{col:b.col,row:b.row}},collision:{},draggable:{}},f=function(a,b,c){var d;return function(){var e=this,f=arguments,g=function(){d=null,c||a.apply(e,f)};c&&!d&&a.apply(e,f),clearTimeout(d),d=setTimeout(g,b)}},g=function(a,b){var c,d,e,g,h,i,j=f(function(){h=g=!1},b,!0);return function(){c=this,d=arguments;var f=function(){e=null,h&&a.apply(c,d),j()};return e||(e=setTimeout(f,b)),g?h=!0:i=a.apply(c,d),j(),g=!0,i}},i=h.prototype;i.init=function(){this.generate_grid_and_stylesheet(),this.get_widgets_from_DOM(),this.set_dom_grid_height(),this.$wrapper.addClass("ready"),this.draggable(),a(b).bind("resize",g(a.proxy(this.recalculate_faux_grid,this),200))},i.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.$el).hide();this.$widgets=this.$widgets.add(f),this.register_widget(f),this.$widgets.draggable("destroy"),this.draggable(),this.set_dom_grid_height(),f.fadeIn()},i.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})}}if(e.length){var j=this.sort_by_row_asc(e);return j=this.sort_by_row_asc(j)[0],j}return!1},i.remove_widget=function(b){var c=b instanceof jQuery?b:a(b),d=c.coords().grid;this.$widgets=this.$widgets.not(c);var e=this.widgets_below(c);this.remove_from_gridmap(d),c.fadeOut(a.proxy(function(){c.remove(),e.each(a.proxy(function(b,c){this.move_widget_up(a(c),d.size_y)},this))},this))},i.serialize=function(b){b||(b=this.$widgets);var c=[];return b.each(a.proxy(function(b,d){c.push(this.options.serialize_params(a(d),a(d).coords().grid))},this)),c},i.serialize_changed=function(){return this.serialize(this.$changed)},i.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 a.data("coords",a.coords()),a.data("coords").grid=b,this.add_to_gridmap(b,a),this.widgets.push(a),this},i.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},i.remove_from_gridmap=function(a){return this.update_widget_position(a,!1)},i.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))}},i.draggable=function(){var b=this,c=a.extend(!0,{},this.options.draggable,{start:function(c,d){b.$player=a(this),b.$helper=b.options.draggable.helper==="clone"?a(d.helper):b.$player,b.on_start_drag.call(b,c,d)},stop:function(a,c){b.on_stop_drag.call(b,c)},drag:g(function(a,c){b.on_drag.call(b,a,c)},100,!0)});return this.$widgets.draggable(c),this},i.on_start_drag=function(b,c){this.$player.addClass("player"),this.$wrapper.addClass("dragging"),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.drag_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.$el),this.options.draggable.start&&this.options.draggable.start.call(this,b,c)},i.on_drag=function(a,b){this.colliders_data=this.drag_api.get_closest_colliders(),this.on_overlapped_column_change(this.on_start_overlapping_column,this.on_stop_overlapping_column),this.on_overlapped_row_change(this.on_start_overlapping_row,this.on_stop_overlapping_row),this.options.draggable.drag&&this.options.draggable.drag.call(this,a,b)},i.on_stop_drag=function(a,b){this.colliders_data=this.drag_api.get_closest_colliders(),this.on_overlapped_column_change(this.on_start_overlapping_column,this.on_stop_overlapping_column),this.on_overlapped_row_change(this.on_start_overlapping_row,this.on_stop_overlapping_row),this.$player.add(this.$helper).attr({"data-col":this.placeholder_grid_data.col,"data-row":this.placeholder_grid_data.row}).css({left:"",top:""}).removeClass("player"),this.$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)},i.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},i.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},i.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}},i.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)}},i.sort_by_row_asc=function(a){return a=a.sort(function(a,b){return a.row>b.row?1:-1}),a},i.sort_by_col_asc=function(a){return a=a.sort(function(a,b){return a.col>b.col?1:-1}),a},i.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},i.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},i.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))},i.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},i.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},i.is_placeholder_in_col=function(b){return a.inArray(b,this.cells_occupied_by_placeholder.cols)>=0},i.is_empty=function(a,b){return typeof this.gridmap[a]!="undefined"&&typeof this.gridmap[a][b]!="undefined"&&this.gridmap[a][b]===!1?!0:!1},i.is_occupied=function(a,b){return this.gridmap[a]?this.gridmap[a][b]?!0:!1:!1},i.is_widget=function(a,b){var c=this.gridmap[a];return c?(c=c[b],c?c:!1):!1},i.is_widget_under_player=function(a,b){return this.is_widget(a,b)?this.is_player_in(a,b):!1},i.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},i.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=this.placeholder_grid_data.row<c,g=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}),(f||g)&&e.each(a.proxy(function(c,e){this.move_widget_up(a(e),this.placeholder_grid_data.col-b+d.size_y)},this))},i.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},i.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},i.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},i.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},i.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},i.on_start_overlapping_column=function(a){this.set_player(a,!1)},i.on_start_overlapping_row=function(a){this.set_player(!1,a)},i.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)})},i.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)})},i.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.$changed.add(b),g.each(function(b,c){var e=a(c),f=e.coords().grid,g=d.can_go_widget_up(f);g&&g!==f.row&&d.move_widget_to(e,g)}),this)},i.move_widget_up=function(b,c){var d=b.coords().grid,e=d.row,f=[],g=!0;c||(c=1);if(!this.can_go_up(b))return!1;this.for_each_column_occupied(d,function(d){if(a.inArray(b,f)===-1){var g=b.coords().grid,h=e-c;h=this.can_go_up_to_row(g,d,h);if(!h)return!0;var i=this.widgets_below(b);this.remove_from_gridmap(g),g.row=h,this.add_to_gridmap(g),b.attr("data-row",g.row),this.$changed=this.$changed.add(b),f.push(b),i.each(a.proxy(function(b,d){this.move_widget_up(a(d),c)},this))}})},i.move_widget_down=function(b,c){var d=b.coords().grid,e=d.row,f=[],g=c;if(!b)return!1;if(a.inArray(b,f)===-1){var h=b.coords().grid,i=e+c,j=this.widgets_below(b);this.remove_from_gridmap(h),j.each(a.proxy(function(b,c){var d=a(c),e=d.coords().grid,f=this.displacement_diff(e,h,g);f>0&&this.move_widget_down(d,f)},this)),h.row=i,this.update_widget_position(h,b),b.attr("data-row",h.row),this.$changed=this.$changed.add(b),f.push(b)}},i.can_go_up_to_row=function(b,c,d){var e=this.gridmap,f=!0,g=[],h=b.row,i;this.for_each_column_occupied(b,function(a){var b=e[a];g[a]=[],i=h;while(i--)if(this.is_empty(a,i)&&!this.is_placeholder_in(a,i))g[a].push(i);else break;if(!g[a].length)return f=!1,!0});if(!f)return!1;i=d;for(i=1;i<h;i++){var j=!0;for(var k=0,l=g.length;k<l;k++)g[k]&&a.inArray(i,g[k])===-1&&(j=!1);if(j===!0){f=i;break}}return f},i.displacement_diff=function(a,b,c){var d=a.row,e=[],f=b.row+b.size_y;this.for_each_column_occupied(a,function(a){var b=0;for(var c=f;c<d;c++)this.is_empty(a,c)&&(b=b+1);e.push(b)});var g=Math.max.apply(null,e);return c=c-g,c>0?c:0},i.widgets_below=function(b){var c=a.isPlainObject(b)?b:b.coords().grid,d=this,e=this.gridmap,f=c.row+c.size_y-1,g=a([]);return this.for_each_column_occupied(c,function(b){d.for_each_widget_below(b,f,function(b,c){if(!d.is_player(this)&&a.inArray(this,g)===-1)return g=g.add(this),!0})}),this.sort_by_row_asc(g)},i.set_cells_player_occupies=function(a,b){return this.remove_from_gridmap(this.placeholder_grid_data),this.placeholder_grid_data.col=a,this.placeholder_grid_data.row=b,this.add_to_gridmap(this.placeholder_grid_data,this.$player),this},i.empty_cells_player_occupies=function(){return this.remove_from_gridmap(this.placeholder_grid_data),this},i.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)},i.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=this.get_cells_occupied(a),h=!0;return this.for_each_cell_occupied(f,function(a,b){var c=this.is_widget(a,b);c&&!c.is(e)&&(h=!1)}),h},i.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},i.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},i.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},i.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},i.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)}},i.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)}},i._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)},i.for_each_widget_above=function(a,b,c){return this._traversing_widgets("for_each","above",a,b,c),this},i.for_each_widget_below=function(a,b,c){return this._traversing_widgets("for_each","below",a,b,c),this},i.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},i.set_dom_grid_height=function(){var a=this.get_highest_occupied_cell().row;return this.$el.css("height",a*this.min_widget_height),this},i.generate_stylesheet=function(a,b){var c="",d=10,e=6,f=6,g,h;for(g=b+d;g>=0;g--)c+='[data-col="'+(g+1)+'"] { left: '+g*this.min_widget_width+"px;} ";for(g=a+d;g>=0;g--)c+='[data-row="'+(g+1)+'"] { top: '+g*this.min_widget_height+"px;} ";for(var i=1;i<e;i++)c+='[data-sizey="'+i+'"] { height: '+(i*this.options.widget_base_dimensions[1]+(i-1)*this.options.widget_margins[1]*2)+"px;}";for(var j=1;j<f;j++)c+='[data-sizex="'+j+'"] { width: '+(j*this.options.widget_base_dimensions[0]+(j-1)*this.options.widget_margins[0]*2)+"px;}";return this.add_style_tag(c)},i.add_style_tag=function(a){var b=c,d=b.createElement("style");return b.getElementsByTagName("head")[0].appendChild(d),d.setAttribute("type","text/css"),d.styleSheet?d.styleSheet.cssText=a:d.appendChild(c.createTextNode(a)),this},i.generate_faux_grid=function(b,c){this.faux_grid=[],this.gridmap=[];var d,e;for(d=c;d>0;d--){this.gridmap[d]=[];for(e=b;e>0;e--){var f=a({left:this.baseX+(d-1)*this.min_widget_width,top:this.baseY+(e-1)*this.min_widget_height,width:this.min_widget_width,height:this.min_widget_height,col:d,row:e,original_col:d,original_row:e}).coords();this.gridmap[d][e]=!1,this.faux_grid.push(f)}}return this},i.recalculate_faux_grid=function(){var c=this.$wrapper.width();return this.baseX=(a(b).width()-c)/2,this.baseY=this.$wrapper.offset().top,a.each(this.faux_grid,a.proxy(function(a,b){this.faux_grid[a]=b.update({left:this.baseX+(b.data.col-1)*this.min_widget_width,top:this.baseY+(b.data.row-1)*this.min_widget_height})},this)),this},i.get_widgets_from_DOM=function(){return this.$widgets.each(a.proxy(function(b,c){this.register_widget(a(c))},this)),this},i.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 e=Math.max(i,e,this.options.min_cols),f=Math.max(j,f,this.options.min_rows),this.baseX=(a(b).width()-c)/2,this.baseY=this.$wrapper.offset().top,this.options.autogenerate_stylesheet&&this.generate_stylesheet(f,e),this.generate_faux_grid(f,e)},a.fn.gridster=function(b){return this.each(function(){a(this).data("gridster")||a(this).data("gridster",new h(this,b))})}}(jQuery,window,document);
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e=this.next_position(c,d),f=a(b).attr({"data-col":e.col,"data-row":e.row,"data-sizex":e.size_x,"data-sizey":e.size_y}).addClass("gs_w").appendTo(this.$el).hide();this.$widgets=this.$widgets.add(f),this.register_widget(f),this.$widgets.draggable("destroy"),this.draggable(),this.set_dom_grid_height(),f.fadeIn()},i.next_position=function(a,b){a||(a=1),b||(b=1);var c=this.gridmap,d=c.length,e=[];for(var f=1;f<d;f++){var g=c[f].length;for(var h=1;h<=g;h++){var i=this.can_move_to({size_x:a,size_y:b},f,h);i&&e.push({col:f,row:h,size_y:b,size_x:a})}}if(e.length){var j=this.sort_by_row_desc(e);return j=this.sort_by_col_asc(j)[0],j}return!1},i.remove_widget=function(b){var c=b instanceof jQuery?b:a(b),d=c.coords().grid;this.$widgets=this.$widgets.not(c);var e=this.widgets_below(c);this.remove_from_gridmap(d),c.fadeOut(a.proxy(function(){c.remove(),e.each(a.proxy(function(b,c){this.move_widget_up(a(c),d.size_y)},this))},this))},i.serialize=function(b){b||(b=this.$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},i.serialize_changed=function(){return this.serialize(this.$changed)},i.register_widget=function(a){var b={col:parseInt(a.attr("data-col"),10),row:parseInt(a.attr("data-row"),10),size_x:parseInt(a.attr("data-sizex"),10),size_y:parseInt(a.attr("data-sizey"),10),el:a};return a.data("coords",a.coords()),a.data("coords").grid=b,this.add_to_gridmap(b,a),this.widgets.push(a),this},i.update_widget_position=function(a,b){return this.for_each_cell_occupied(a,function(a,c){if(!this.gridmap[a])return this;this.gridmap[a][c]=b}),this},i.remove_from_gridmap=function(a){return this.update_widget_position(a,!1)},i.add_to_gridmap=function(b,c){this.update_widget_position(b,c||b.el);if(b.el){var d=this.widgets_below(b.el);d.each(a.proxy(function(b,c){this.move_widget_up(a(c))},this))}},i.draggable=function(){var b=this,c=a.extend(!0,{},this.options.draggable,{start:function(c,d){b.$player=a(this),b.$helper=b.options.draggable.helper==="clone"?a(d.helper):b.$player,b.on_start_drag.call(b,c,d),b.$el.trigger("gridster:dragstart")},stop:function(a,c){b.on_stop_drag.call(b,c),b.$el.trigger("gridster:dragstop")},drag:g(function(a,c){b.on_drag.call(b,a,c),b.$el.trigger("gridster:drag")},100,!0)});return this.$widgets.draggable(c),this},i.on_start_drag=function(b,c){this.$player.addClass("player"),this.$wrapper.addClass("dragging"),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.drag_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.$el),this.options.draggable.start&&this.options.draggable.start.call(this,b,c)},i.on_drag=function(a,b){this.colliders_data=this.drag_api.get_closest_colliders(),this.on_overlapped_column_change(this.on_start_overlapping_column,this.on_stop_overlapping_column),this.on_overlapped_row_change(this.on_start_overlapping_row,this.on_stop_overlapping_row),this.options.draggable.drag&&this.options.draggable.drag.call(this,a,b)},i.on_stop_drag=function(a,b){this.colliders_data=this.drag_api.get_closest_colliders(),this.on_overlapped_column_change(this.on_start_overlapping_column,this.on_stop_overlapping_column),this.on_overlapped_row_change(this.on_start_overlapping_row,this.on_stop_overlapping_row),this.$player.add(this.$helper).attr({"data-col":this.placeholder_grid_data.col,"data-row":this.placeholder_grid_data.row}).css({left:"",top:""}).removeClass("player"),this.$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)},i.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},i.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},i.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}},i.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)}},i.sort_by_row_asc=function(a){return a=a.sort(function(a,b){return a.row>b.row?1:-1}),a},i.sort_by_col_asc=function(a){return a=a.sort(function(a,b){return a.col>b.col?1:-1}),a},i.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},i.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},i.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))},i.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},i.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},i.is_placeholder_in_col=function(b){var c=this.cells_occupied_by_placeholder||[];return a.inArray(b,c.cols)>=0},i.is_empty=function(a,b){return typeof this.gridmap[a]!="undefined"&&typeof this.gridmap[a][b]!="undefined"&&this.gridmap[a][b]===!1?!0:!1},i.is_occupied=function(a,b){return this.gridmap[a]?this.gridmap[a][b]?!0:!1:!1},i.is_widget=function(a,b){var c=this.gridmap[a];return c?(c=c[b],c?c:!1):!1},i.is_widget_under_player=function(a,b){return this.is_widget(a,b)?this.is_player_in(a,b):!1},i.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},i.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=this.placeholder_grid_data.row<c,g=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}),(f||g)&&e.each(a.proxy(function(c,e){this.move_widget_up(a(e),this.placeholder_grid_data.col-b+d.size_y)},this))},i.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},i.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},i.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},i.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},i.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},i.on_start_overlapping_column=function(a){this.set_player(a,!1)},i.on_start_overlapping_row=function(a){this.set_player(!1,a)},i.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)})},i.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)})},i.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.$changed.add(b),g.each(function(b,c){var e=a(c),f=e.coords().grid,g=d.can_go_widget_up(f);g&&g!==f.row&&d.move_widget_to(e,g)}),this)},i.move_widget_up=function(b,c){var d=b.coords().grid,e=d.row,f=[],g=!0;c||(c=1);if(!this.can_go_up(b))return!1;this.for_each_column_occupied(d,function(d){if(a.inArray(b,f)===-1){var g=b.coords().grid,h=e-c;h=this.can_go_up_to_row(g,d,h);if(!h)return!0;var i=this.widgets_below(b);this.remove_from_gridmap(g),g.row=h,this.add_to_gridmap(g),b.attr("data-row",g.row),this.$changed=this.$changed.add(b),f.push(b),i.each(a.proxy(function(b,d){this.move_widget_up(a(d),c)},this))}})},i.move_widget_down=function(b,c){var d=b.coords().grid,e=d.row,f=[],g=c;if(!b)return!1;if(a.inArray(b,f)===-1){var h=b.coords().grid,i=e+c,j=this.widgets_below(b);this.remove_from_gridmap(h),j.each(a.proxy(function(b,c){var d=a(c),e=d.coords().grid,f=this.displacement_diff(e,h,g);f>0&&this.move_widget_down(d,f)},this)),h.row=i,this.update_widget_position(h,b),b.attr("data-row",h.row),this.$changed=this.$changed.add(b),f.push(b)}},i.can_go_up_to_row=function(b,c,d){var e=this.gridmap,f=!0,g=[],h=b.row,i;this.for_each_column_occupied(b,function(a){var b=e[a];g[a]=[],i=h;while(i--)if(this.is_empty(a,i)&&!this.is_placeholder_in(a,i))g[a].push(i);else break;if(!g[a].length)return f=!1,!0});if(!f)return!1;i=d;for(i=1;i<h;i++){var j=!0;for(var k=0,l=g.length;k<l;k++)g[k]&&a.inArray(i,g[k])===-1&&(j=!1);if(j===!0){f=i;break}}return f},i.displacement_diff=function(a,b,c){var d=a.row,e=[],f=b.row+b.size_y;this.for_each_column_occupied(a,function(a){var b=0;for(var c=f;c<d;c++)this.is_empty(a,c)&&(b=b+1);e.push(b)});var g=Math.max.apply(null,e);return c=c-g,c>0?c:0},i.widgets_below=function(b){var c=a.isPlainObject(b)?b:b.coords().grid,d=this,e=this.gridmap,f=c.row+c.size_y-1,g=a([]);return this.for_each_column_occupied(c,function(b){d.for_each_widget_below(b,f,function(b,c){if(!d.is_player(this)&&a.inArray(this,g)===-1)return g=g.add(this),!0})}),this.sort_by_row_asc(g)},i.set_cells_player_occupies=function(a,b){return this.remove_from_gridmap(this.placeholder_grid_data),this.placeholder_grid_data.col=a,this.placeholder_grid_data.row=b,this.add_to_gridmap(this.placeholder_grid_data,this.$player),this},i.empty_cells_player_occupies=function(){return this.remove_from_gridmap(this.placeholder_grid_data),this},i.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)},i.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;return 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},i.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},i.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},i.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},i.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},i.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)}},i.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)}},i._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)},i.for_each_widget_above=function(a,b,c){return this._traversing_widgets("for_each","above",a,b,c),this},i.for_each_widget_below=function(a,b,c){return this._traversing_widgets("for_each","below",a,b,c),this},i.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},i.set_dom_grid_height=function(){var a=this.get_highest_occupied_cell().row;return this.$el.css("height",a*this.min_widget_height),this},i.generate_stylesheet=function(a,b){var c="",d=10,e=6,f=6,g,h;for(g=b+d;g>=0;g--)c+='[data-col="'+(g+1)+'"] { left: '+g*this.min_widget_width+"px;} ";for(g=a+d;g>=0;g--)c+='[data-row="'+(g+1)+'"] { top: '+g*this.min_widget_height+"px;} ";for(var i=1;i<e;i++)c+='[data-sizey="'+i+'"] { height: '+(i*this.options.widget_base_dimensions[1]+(i-1)*this.options.widget_margins[1]*2)+"px;}";for(var j=1;j<f;j++)c+='[data-sizex="'+j+'"] { width: '+(j*this.options.widget_base_dimensions[0]+(j-1)*this.options.widget_margins[0]*2)+"px;}";return this.add_style_tag(c)},i.add_style_tag=function(a){var b=c,d=b.createElement("style");return b.getElementsByTagName("head")[0].appendChild(d),d.setAttribute("type","text/css"),d.styleSheet?d.styleSheet.cssText=a:d.appendChild(c.createTextNode(a)),this},i.generate_faux_grid=function(b,c){this.faux_grid=[],this.gridmap=[];var d,e;for(d=c;d>0;d--){this.gridmap[d]=[];for(e=b;e>0;e--){var f=a({left:this.baseX+(d-1)*this.min_widget_width,top:this.baseY+(e-1)*this.min_widget_height,width:this.min_widget_width,height:this.min_widget_height,col:d,row:e,original_col:d,original_row:e}).coords();this.gridmap[d][e]=!1,this.faux_grid.push(f)}}return this},i.recalculate_faux_grid=function(){var c=this.$wrapper.width();return this.baseX=(a(b).width()-c)/2,this.baseY=this.$wrapper.offset().top,a.each(this.faux_grid,a.proxy(function(a,b){this.faux_grid[a]=b.update({left:this.baseX+(b.data.col-1)*this.min_widget_width,top:this.baseY+(b.data.row-1)*this.min_widget_height})},this)),this},i.get_widgets_from_DOM=function(){return this.$widgets.each(a.proxy(function(b,c){this.register_widget(a(c))},this)),this},i.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 e=Math.max(i,e,this.options.min_cols),f=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(f,e),this.generate_faux_grid(f,e)},a.fn.gridster=function(b){return this.each(function(){a(this).data("gridster")||a(this).data("gridster",new h(this,b))})}}(jQuery,window,document);
\ No newline at end of file
diff --git a/docs/classes/Gridster.html b/docs/classes/Gridster.html
index 707386ee79..fe4b5d5983 100644
--- a/docs/classes/Gridster.html
+++ b/docs/classes/Gridster.html
@@ -939,7 +939,7 @@
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1896"><code>src&#x2F;jquery.gridster.js:1896</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1899"><code>src&#x2F;jquery.gridster.js:1899</code></a>
         
         </p>
 
@@ -1317,7 +1317,7 @@
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l991"><code>src&#x2F;jquery.gridster.js:991</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l995"><code>src&#x2F;jquery.gridster.js:995</code></a>
         
         </p>
 
@@ -1435,7 +1435,7 @@
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1398"><code>src&#x2F;jquery.gridster.js:1398</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1402"><code>src&#x2F;jquery.gridster.js:1402</code></a>
         
         </p>
 
@@ -1572,7 +1572,7 @@ upper row possible.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1040"><code>src&#x2F;jquery.gridster.js:1040</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1044"><code>src&#x2F;jquery.gridster.js:1044</code></a>
         
         </p>
 
@@ -1690,7 +1690,7 @@ upper row possible.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1570"><code>src&#x2F;jquery.gridster.js:1570</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1574"><code>src&#x2F;jquery.gridster.js:1574</code></a>
         
         </p>
 
@@ -1888,7 +1888,7 @@ into account the dimensions (<code>size_y</code> and <code>size_x</code> attrs.
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1533"><code>src&#x2F;jquery.gridster.js:1533</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1537"><code>src&#x2F;jquery.gridster.js:1537</code></a>
         
         </p>
 
@@ -1975,7 +1975,7 @@ into account the dimensions (<code>size_y</code> and <code>size_x</code> attrs.
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1668"><code>src&#x2F;jquery.gridster.js:1668</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1671"><code>src&#x2F;jquery.gridster.js:1671</code></a>
         
         </p>
 
@@ -2103,7 +2103,7 @@ each one.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1689"><code>src&#x2F;jquery.gridster.js:1689</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1692"><code>src&#x2F;jquery.gridster.js:1692</code></a>
         
         </p>
 
@@ -2231,7 +2231,7 @@ each one.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1708"><code>src&#x2F;jquery.gridster.js:1708</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1711"><code>src&#x2F;jquery.gridster.js:1711</code></a>
         
         </p>
 
@@ -2364,7 +2364,7 @@ each one.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1774"><code>src&#x2F;jquery.gridster.js:1774</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1777"><code>src&#x2F;jquery.gridster.js:1777</code></a>
         
         </p>
 
@@ -2511,7 +2511,7 @@ iteration. The value of <code>this</code> inside the function is the jQuery wrap
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1790"><code>src&#x2F;jquery.gridster.js:1790</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1793"><code>src&#x2F;jquery.gridster.js:1793</code></a>
         
         </p>
 
@@ -2652,7 +2652,7 @@ iteration. The value of <code>this</code> inside the function is the jQuery wrap
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1919"><code>src&#x2F;jquery.gridster.js:1919</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1922"><code>src&#x2F;jquery.gridster.js:1922</code></a>
         
         </p>
 
@@ -2762,7 +2762,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1993"><code>src&#x2F;jquery.gridster.js:1993</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1996"><code>src&#x2F;jquery.gridster.js:1996</code></a>
         
         </p>
 
@@ -2850,7 +2850,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <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#l1855"><code>src&#x2F;jquery.gridster.js:1855</code></a>
         
         </p>
 
@@ -2969,7 +2969,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1640"><code>src&#x2F;jquery.gridster.js:1640</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1643"><code>src&#x2F;jquery.gridster.js:1643</code></a>
         
         </p>
 
@@ -3063,7 +3063,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1806"><code>src&#x2F;jquery.gridster.js:1806</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1809"><code>src&#x2F;jquery.gridster.js:1809</code></a>
         
         </p>
 
@@ -3144,7 +3144,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1605"><code>src&#x2F;jquery.gridster.js:1605</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1608"><code>src&#x2F;jquery.gridster.js:1608</code></a>
         
         </p>
 
@@ -3249,7 +3249,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1623"><code>src&#x2F;jquery.gridster.js:1623</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1626"><code>src&#x2F;jquery.gridster.js:1626</code></a>
         
         </p>
 
@@ -3366,7 +3366,7 @@ detect row or column that we want to go.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1091"><code>src&#x2F;jquery.gridster.js:1091</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1095"><code>src&#x2F;jquery.gridster.js:1095</code></a>
         
         </p>
 
@@ -3494,7 +3494,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1979"><code>src&#x2F;jquery.gridster.js:1979</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1982"><code>src&#x2F;jquery.gridster.js:1982</code></a>
         
         </p>
 
@@ -3565,7 +3565,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1169"><code>src&#x2F;jquery.gridster.js:1169</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1173"><code>src&#x2F;jquery.gridster.js:1173</code></a>
         
         </p>
 
@@ -3636,7 +3636,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l927"><code>src&#x2F;jquery.gridster.js:927</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l931"><code>src&#x2F;jquery.gridster.js:931</code></a>
         
         </p>
 
@@ -3723,7 +3723,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l846"><code>src&#x2F;jquery.gridster.js:846</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l850"><code>src&#x2F;jquery.gridster.js:850</code></a>
         
         </p>
 
@@ -3848,7 +3848,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l865"><code>src&#x2F;jquery.gridster.js:865</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l869"><code>src&#x2F;jquery.gridster.js:869</code></a>
         
         </p>
 
@@ -3973,7 +3973,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l820"><code>src&#x2F;jquery.gridster.js:820</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l823"><code>src&#x2F;jquery.gridster.js:823</code></a>
         
         </p>
 
@@ -4092,7 +4092,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l834"><code>src&#x2F;jquery.gridster.js:834</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l837"><code>src&#x2F;jquery.gridster.js:837</code></a>
         
         </p>
 
@@ -4202,7 +4202,7 @@ the</code>upper<em>rows<code>array. Iteration starts from row specified in</code
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l788"><code>src&#x2F;jquery.gridster.js:788</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l791"><code>src&#x2F;jquery.gridster.js:791</code></a>
         
         </p>
 
@@ -4330,7 +4330,7 @@ HTMLElements.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l805"><code>src&#x2F;jquery.gridster.js:805</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l808"><code>src&#x2F;jquery.gridster.js:808</code></a>
         
         </p>
 
@@ -4456,7 +4456,7 @@ and col given.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l885"><code>src&#x2F;jquery.gridster.js:885</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l889"><code>src&#x2F;jquery.gridster.js:889</code></a>
         
         </p>
 
@@ -4582,7 +4582,7 @@ else returns the jQuery HTMLElement
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l910"><code>src&#x2F;jquery.gridster.js:910</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l914"><code>src&#x2F;jquery.gridster.js:914</code></a>
         
         </p>
 
@@ -4714,7 +4714,7 @@ params and if this is under the widget that is being dragged.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l742"><code>src&#x2F;jquery.gridster.js:742</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l745"><code>src&#x2F;jquery.gridster.js:745</code></a>
         
         </p>
 
@@ -4856,7 +4856,7 @@ each widget) in descending way.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1353"><code>src&#x2F;jquery.gridster.js:1353</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1357"><code>src&#x2F;jquery.gridster.js:1357</code></a>
         
         </p>
 
@@ -4975,7 +4975,7 @@ each widget) in descending way.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1264"><code>src&#x2F;jquery.gridster.js:1264</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1268"><code>src&#x2F;jquery.gridster.js:1268</code></a>
         
         </p>
 
@@ -5087,7 +5087,7 @@ if they can.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1307"><code>src&#x2F;jquery.gridster.js:1307</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1311"><code>src&#x2F;jquery.gridster.js:1311</code></a>
         
         </p>
 
@@ -5335,7 +5335,7 @@ if they can.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l441"><code>src&#x2F;jquery.gridster.js:441</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l444"><code>src&#x2F;jquery.gridster.js:444</code></a>
         
         </p>
 
@@ -5448,7 +5448,7 @@ if they can.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l518"><code>src&#x2F;jquery.gridster.js:518</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l521"><code>src&#x2F;jquery.gridster.js:521</code></a>
         
         </p>
 
@@ -5576,7 +5576,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l558"><code>src&#x2F;jquery.gridster.js:558</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l561"><code>src&#x2F;jquery.gridster.js:561</code></a>
         
         </p>
 
@@ -5700,7 +5700,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l392"><code>src&#x2F;jquery.gridster.js:392</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l395"><code>src&#x2F;jquery.gridster.js:395</code></a>
         
         </p>
 
@@ -5807,7 +5807,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1202"><code>src&#x2F;jquery.gridster.js:1202</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1206"><code>src&#x2F;jquery.gridster.js:1206</code></a>
         
         </p>
 
@@ -5911,7 +5911,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1214"><code>src&#x2F;jquery.gridster.js:1214</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1218"><code>src&#x2F;jquery.gridster.js:1218</code></a>
         
         </p>
 
@@ -6017,7 +6017,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l467"><code>src&#x2F;jquery.gridster.js:467</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l470"><code>src&#x2F;jquery.gridster.js:470</code></a>
         
         </p>
 
@@ -6124,7 +6124,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <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#l1230"><code>src&#x2F;jquery.gridster.js:1230</code></a>
         
         </p>
 
@@ -6228,7 +6228,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1244"><code>src&#x2F;jquery.gridster.js:1244</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1248"><code>src&#x2F;jquery.gridster.js:1248</code></a>
         
         </p>
 
@@ -6322,7 +6322,7 @@ overlapped or stops being overlapped.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1955"><code>src&#x2F;jquery.gridster.js:1955</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1958"><code>src&#x2F;jquery.gridster.js:1958</code></a>
         
         </p>
 
@@ -6871,7 +6871,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1516"><code>src&#x2F;jquery.gridster.js:1516</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1520"><code>src&#x2F;jquery.gridster.js:1520</code></a>
         
         </p>
 
@@ -6980,7 +6980,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1838"><code>src&#x2F;jquery.gridster.js:1838</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1841"><code>src&#x2F;jquery.gridster.js:1841</code></a>
         
         </p>
 
@@ -7067,7 +7067,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l949"><code>src&#x2F;jquery.gridster.js:949</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l953"><code>src&#x2F;jquery.gridster.js:953</code></a>
         
         </p>
 
@@ -7194,7 +7194,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l594"><code>src&#x2F;jquery.gridster.js:594</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l597"><code>src&#x2F;jquery.gridster.js:597</code></a>
         
         </p>
 
@@ -7315,7 +7315,7 @@ mapped array of positions.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l683"><code>src&#x2F;jquery.gridster.js:683</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l686"><code>src&#x2F;jquery.gridster.js:686</code></a>
         
         </p>
 
@@ -7420,7 +7420,7 @@ each widget) in ascending way.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l703"><code>src&#x2F;jquery.gridster.js:703</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l706"><code>src&#x2F;jquery.gridster.js:706</code></a>
         
         </p>
 
@@ -7525,7 +7525,7 @@ coords of each widget) in ascending way.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l723"><code>src&#x2F;jquery.gridster.js:723</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l726"><code>src&#x2F;jquery.gridster.js:726</code></a>
         
         </p>
 
@@ -7759,7 +7759,7 @@ the grid coords object passed in the <code>grid_data</code> param.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1487"><code>src&#x2F;jquery.gridster.js:1487</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l1491"><code>src&#x2F;jquery.gridster.js:1491</code></a>
         
         </p>
 
@@ -7863,7 +7863,7 @@ the grid coords object passed in the <code>grid_data</code> param.</p>
             
         
         
-        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l647"><code>src&#x2F;jquery.gridster.js:647</code></a>
+        <a href="..&#x2F;files&#x2F;src_jquery.gridster.js.html#l650"><code>src&#x2F;jquery.gridster.js:650</code></a>
         
         </p>
 
diff --git a/docs/data.json b/docs/data.json
index bbf6b37202..45ae5c0f72 100644
--- a/docs/data.json
+++ b/docs/data.json
@@ -410,7 +410,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 392,
+            "line": 395,
             "description": "This function is executed when the player begins to be dragged.",
             "itemtype": "method",
             "name": "on_start_drag",
@@ -430,7 +430,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 441,
+            "line": 444,
             "description": "This function is executed when the player is being dragged.",
             "itemtype": "method",
             "name": "on_drag",
@@ -450,7 +450,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 467,
+            "line": 470,
             "description": "This function is executed when the player stops being dragged.",
             "itemtype": "method",
             "name": "on_stop_drag",
@@ -470,7 +470,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 518,
+            "line": 521,
             "description": "Executes the callbacks passed as arguments when a column begins to be\noverlapped or stops being overlapped.",
             "params": [
                 {
@@ -494,7 +494,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 558,
+            "line": 561,
             "description": "Executes the callbacks passed as arguments when a row starts to be\noverlapped or stops being overlapped.",
             "params": [
                 {
@@ -518,7 +518,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 594,
+            "line": 597,
             "description": "Sets the current position of the player",
             "params": [
                 {
@@ -542,7 +542,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 647,
+            "line": 650,
             "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",
@@ -561,7 +561,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 683,
+            "line": 686,
             "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",
@@ -580,7 +580,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 703,
+            "line": 706,
             "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",
@@ -599,7 +599,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 723,
+            "line": 726,
             "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",
@@ -618,7 +618,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 742,
+            "line": 745,
             "description": "Sorts an Array of grid coords objects (representing the grid coords of\neach widget) in descending way.",
             "itemtype": "method",
             "name": "manage_movements",
@@ -647,7 +647,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 788,
+            "line": 791,
             "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",
@@ -672,7 +672,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 805,
+            "line": 808,
             "description": "Determines if the widget that is being dragged is currently over the row\nand col given.",
             "itemtype": "method",
             "name": "is_player_in",
@@ -696,7 +696,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 820,
+            "line": 823,
             "description": "Determines if the placeholder is currently over the row and col given.",
             "itemtype": "method",
             "name": "is_placeholder_in",
@@ -720,7 +720,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 834,
+            "line": 837,
             "description": "Determines if the placeholder is currently over the column given.",
             "itemtype": "method",
             "name": "is_placeholder_in_col",
@@ -739,7 +739,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 846,
+            "line": 850,
             "description": "Determines if the cell represented by col and row params is empty.",
             "itemtype": "method",
             "name": "is_empty",
@@ -763,7 +763,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 865,
+            "line": 869,
             "description": "Determines if the cell represented by col and row params is occupied.",
             "itemtype": "method",
             "name": "is_occupied",
@@ -787,7 +787,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 885,
+            "line": 889,
             "description": "Determines if there is a widget in the cell represented by col/row params.",
             "itemtype": "method",
             "name": "is_widget",
@@ -811,7 +811,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 910,
+            "line": 914,
             "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",
@@ -835,7 +835,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 927,
+            "line": 931,
             "description": "Get widgets overlapping with the player.",
             "itemtype": "method",
             "name": "get_widgets_under_player",
@@ -847,7 +847,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 949,
+            "line": 953,
             "description": "Put placeholder at the row and column specified.",
             "itemtype": "method",
             "name": "set_placeholder",
@@ -871,7 +871,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 991,
+            "line": 995,
             "description": "Determines whether the player can move to a position above.",
             "itemtype": "method",
             "name": "can_go_player_up",
@@ -890,7 +890,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1040,
+            "line": 1044,
             "description": "Determines whether a widget can move to a position above.",
             "itemtype": "method",
             "name": "can_go_widget_up",
@@ -909,7 +909,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1091,
+            "line": 1095,
             "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",
@@ -938,7 +938,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1169,
+            "line": 1173,
             "description": "Get widgets overlapping with the player.",
             "itemtype": "method",
             "name": "get_widgets_overlapped",
@@ -950,7 +950,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1202,
+            "line": 1206,
             "description": "This callback is executed when the player begins to collide with a column.",
             "itemtype": "method",
             "name": "on_start_overlapping_column",
@@ -969,7 +969,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1214,
+            "line": 1218,
             "description": "A callback executed when the player begins to collide with a row.",
             "itemtype": "method",
             "name": "on_start_overlapping_row",
@@ -988,7 +988,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1226,
+            "line": 1230,
             "description": "A callback executed when the the player ends to collide with a column.",
             "itemtype": "method",
             "name": "on_stop_overlapping_column",
@@ -1007,7 +1007,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1244,
+            "line": 1248,
             "description": "This callback is executed when the player ends to collide with a row.",
             "itemtype": "method",
             "name": "on_stop_overlapping_row",
@@ -1026,7 +1026,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1264,
+            "line": 1268,
             "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",
@@ -1045,7 +1045,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1307,
+            "line": 1311,
             "description": "Move up the specified widget and all below it.",
             "itemtype": "method",
             "name": "move_widget_up",
@@ -1070,7 +1070,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1353,
+            "line": 1357,
             "description": "Move down the specified widget and all below it.",
             "itemtype": "method",
             "name": "move_widget_down",
@@ -1094,7 +1094,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1398,
+            "line": 1402,
             "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",
@@ -1123,7 +1123,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1487,
+            "line": 1491,
             "description": "Get widgets below a widget.",
             "itemtype": "method",
             "name": "widgets_below",
@@ -1142,7 +1142,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1516,
+            "line": 1520,
             "description": "Update the array of mapped positions with the new player position.",
             "itemtype": "method",
             "name": "set_cells_player_occupies",
@@ -1166,7 +1166,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1533,
+            "line": 1537,
             "description": "Remove from the array of mapped positions the reference to the player.",
             "itemtype": "method",
             "name": "empty_cells_player_occupies",
@@ -1178,7 +1178,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1570,
+            "line": 1574,
             "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.",
             "itemtype": "method",
             "name": "can_move_to",
@@ -1207,7 +1207,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1605,
+            "line": 1608,
             "description": "Given the leftmost column returns all columns that are overlapping with the player.",
             "itemtype": "method",
             "name": "get_targeted_columns",
@@ -1227,7 +1227,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1623,
+            "line": 1626,
             "description": "Given the upper row returns all rows that are overlapping with the player.",
             "itemtype": "method",
             "name": "get_targeted_rows",
@@ -1247,7 +1247,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1640,
+            "line": 1643,
             "description": "Get all columns and rows that a widget occupies.",
             "itemtype": "method",
             "name": "get_cells_occupied",
@@ -1266,7 +1266,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1668,
+            "line": 1671,
             "description": "Iterate over the cells occupied by a widget executing a function for\neach one.",
             "itemtype": "method",
             "name": "for_each_cell_occupied",
@@ -1290,7 +1290,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1689,
+            "line": 1692,
             "description": "Iterate over the columns occupied by a widget executing a function for\neach one.",
             "itemtype": "method",
             "name": "for_each_column_occupied",
@@ -1314,7 +1314,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1708,
+            "line": 1711,
             "description": "Iterate over the rows occupied by a widget executing a function for\neach one.",
             "itemtype": "method",
             "name": "for_each_row_occupied",
@@ -1338,7 +1338,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1774,
+            "line": 1777,
             "description": "Iterate over each widget above the column and row specified.",
             "itemtype": "method",
             "name": "for_each_widget_above",
@@ -1367,7 +1367,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1790,
+            "line": 1793,
             "description": "Iterate over each widget below the column and row specified.",
             "itemtype": "method",
             "name": "for_each_widget_below",
@@ -1396,7 +1396,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1806,
+            "line": 1809,
             "description": "Returns the highest occupied cell in the grid.",
             "itemtype": "method",
             "name": "get_highest_occupied_cell",
@@ -1408,7 +1408,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1838,
+            "line": 1841,
             "description": "Set the current height of the parent grid.",
             "itemtype": "method",
             "name": "set_dom_grid_height",
@@ -1420,7 +1420,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1852,
+            "line": 1855,
             "description": "It generates the neccessary styles to position the widgets.",
             "itemtype": "method",
             "name": "generate_stylesheet",
@@ -1444,7 +1444,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1896,
+            "line": 1899,
             "description": "Injects the given CSS as string to the head of the document.",
             "itemtype": "method",
             "name": "add_style_tag",
@@ -1463,7 +1463,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1919,
+            "line": 1922,
             "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",
@@ -1487,7 +1487,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1955,
+            "line": 1958,
             "description": "Recalculates the offsets for the faux grid. You need to use it when\nthe browser is resized.",
             "itemtype": "method",
             "name": "recalculate_faux_grid",
@@ -1499,7 +1499,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1979,
+            "line": 1982,
             "description": "Get all widgets in the DOM and register them.",
             "itemtype": "method",
             "name": "get_widgets_from_DOM",
@@ -1511,7 +1511,7 @@
         },
         {
             "file": "src/jquery.gridster.js",
-            "line": 1993,
+            "line": 1996,
             "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.gridster.js.html b/docs/files/src_jquery.gridster.js.html
index a3e37323eb..4b865c9dcd 100644
--- a/docs/files/src_jquery.gridster.js.html
+++ b/docs/files/src_jquery.gridster.js.html
@@ -299,8 +299,8 @@
         }
 
         if (valid_pos.length) {
-            var next_position = this.sort_by_row_asc(valid_pos);
-            next_position = this.sort_by_row_asc(next_position)[0];
+            var next_position = this.sort_by_row_desc(valid_pos);
+            next_position = this.sort_by_col_asc(next_position)[0];
             return next_position;
         }
         return false;
@@ -467,16 +467,19 @@
                     $(ui.helper) : self.$player;
 
                 self.on_start_drag.call(self, event, ui);
+                self.$el.trigger(&#x27;gridster:dragstart&#x27;);
             },
             stop: function(event, ui) {
                 self.on_stop_drag.call(self, ui);
+                self.$el.trigger(&#x27;gridster:dragstop&#x27;);
             },
             drag: throttle(function(event, ui) {
                 self.on_drag.call(self, event, ui);
+                self.$el.trigger(&#x27;gridster:drag&#x27;);
             }, 100, true)
           });
 
-      this.$widgets.draggable(draggable_options);
+        this.$widgets.draggable(draggable_options);
 
       return this;
     };
@@ -932,7 +935,8 @@
     * @return {Boolean} Returns true or false.
     *&#x2F;
     fn.is_placeholder_in_col = function(col) {
-        return $.inArray(col, this.cells_occupied_by_placeholder.cols) &gt;= 0;
+        var c = this.cells_occupied_by_placeholder || [];
+        return $.inArray(col, c.cols) &gt;= 0;
     };
 
 
@@ -1681,12 +1685,11 @@
             col: col,
             row: row
         };
-        var cells_occupied_by_w = this.get_cells_occupied(widget_grid_data);
         var result = true;
 
         this.for_each_cell_occupied(future_wd, function(tcol, trow){
             var $tw = this.is_widget(tcol, trow);
-            if ($tw &amp;&amp; !$tw.is($w)) {
+            if ($tw &amp;&amp; (!widget_grid_data.el || $tw.is($w))) {
                 result = false;
             }
         });
diff --git a/index.html b/index.html
index 38fe155291..2486a21e55 100755
--- a/index.html
+++ b/index.html
@@ -367,7 +367,10 @@
         widget_margins: [10, 10],
         widget_base_dimensions: [140, 140],
         min_cols: 6,
-        min_rows: 10
+        min_rows: 10,
+        draggable: {
+            helper: "clone"
+        }
     }).data('gridster');
 
   });
diff --git a/src/jquery.gridster.js b/src/jquery.gridster.js
index fcee4facef..fdd1375bae 100644
--- a/src/jquery.gridster.js
+++ b/src/jquery.gridster.js
@@ -206,8 +206,8 @@
         }
 
         if (valid_pos.length) {
-            var next_position = this.sort_by_row_asc(valid_pos);
-            next_position = this.sort_by_row_asc(next_position)[0];
+            var next_position = this.sort_by_row_desc(valid_pos);
+            next_position = this.sort_by_col_asc(next_position)[0];
             return next_position;
         }
         return false;
@@ -842,7 +842,8 @@
     * @return {Boolean} Returns true or false.
     */
     fn.is_placeholder_in_col = function(col) {
-        return $.inArray(col, this.cells_occupied_by_placeholder.cols) >= 0;
+        var c = this.cells_occupied_by_placeholder || [];
+        return $.inArray(col, c.cols) >= 0;
     };
 
 
@@ -1591,12 +1592,11 @@
             col: col,
             row: row
         };
-        var cells_occupied_by_w = this.get_cells_occupied(widget_grid_data);
         var result = true;
 
         this.for_each_cell_occupied(future_wd, function(tcol, trow){
             var $tw = this.is_widget(tcol, trow);
-            if ($tw && !$tw.is($w)) {
+            if ($tw && (!widget_grid_data.el || $tw.is($w))) {
                 result = false;
             }
         });