source: sandbox/2.3-MailArchiver/calendar/js/dhtmlx/sources/ext/ext_outerdrag.js @ 6779

//lame old code doesn't provide raw event object
                scheduler.attachEvent("onTemplatesReady", function(){
                
                        var dragger = (new dhtmlDragAndDropObject());
                        var old = dragger.stopDrag;
                        var last_event;
                        dragger.stopDrag = function(e){
                                last_event = e||event;
                                return old.apply(this, arguments);
                        };
                        dragger.addDragLanding(scheduler._els["dhx_cal_data"][0],{
                                _drag:function(sourceHtmlObject,dhtmlObject,targetHtmlObject){
                                        
                                        var temp = scheduler.attachEvent("onEventCreated", function(id,e){
                                                if (!scheduler.callEvent("onExternalDragIn", [id, sourceHtmlObject, e])){
                                                        this._drag_mode = this._drag_id = null;
                                                        this.deleteEvent(id);
                                                }
                                        });
                                        
                                        if (scheduler.matrix[scheduler._mode])  
                                                scheduler.dblclick_dhx_matrix_cell(last_event);
                                        else
                                                scheduler._on_dbl_click(last_event);
                                                
                                        scheduler.detachEvent(temp);
                                        
                                        
                                },
                                _dragIn:function(htmlObject,shtmlObject){
                                        return htmlObject;
                                },
                                _dragOut:function(htmlObject){
                                        return this;
                                }
                        });
                
                });