code: function(id, sGroup, config) {
          this.initTarget(id, sGroup, config);
          Event.on(this._domRef || this.id, "mousedown", 
                          this.handleMouseDown, this, true);
  
          // Event.on(this.id, "selectstart", Event.preventDefault);
          for (var i in this.events) {
              this.createEvent(i + 'Event');
          }
          
      }
docs: Sets up the DragDrop object.  Must be called in the constructor of any
  YAHOO.util.DragDrop subclass
  @method init
  @param id the id of the linked element
  @param {String} sGroup the group of related items
  @param {object} config configuration attributes