--- a/browser/base/content/tabcandy/app/groups.js
+++ b/browser/base/content/tabcandy/app/groups.js
@@ -563,17 +563,17 @@ window.Group.prototype = $.extend(new It
     if(typeof(item.setResizable) == 'function')
       item.setResizable(true);
 
     if(this._children.length == 0 && !this.locked.close && !this.getTitle()){
       // Only remove the group if, after the last child is dropped, it wasn't
       // dropped back into the group. We need the setTimeout because otherwise
       // at the time of the mouseup the child isn't yet a child of the group.
       var self = this;
-      a.one('mouseup', function(){
+      $el.one('mouseup', function(){
         setTimeout(function(){
           if( self._children.length == 0 ) self.close();
         }, 50);
       });
 
     } else if(!options.dontArrange) {
       this.arrange();
     }
@@ -1099,17 +1099,17 @@ DragInfo.prototype = {
     if(this.parent && !this.parent.locked.close && this.parent != this.item.parent 
         && this.parent._children.length == 1 && !this.parent.getTitle()) {
       this.parent.remove(this.parent._children[0]);
     }*/
      
     if(this.parent && this.parent.expanded)
       this.parent.arrange();
       
-    if(this.item && !this.$el.hasClass('acceptsDrop') && !this.item.parent) {
+    if(this.item && !this.item.parent) {
       this.item.setZ(drag.zIndex);
       drag.zIndex++;
       
       this.item.reloadBounds();
       this.item.pushAway();
     }
     
   }