rem: if (this.mCurrentDragOverTarget.parentNode.id == "NC:PersonalToolbarFolder") 
add: if (this.mCurrentDragOverTarget.parentNode.id == "NC:PersonalToolbarFolder" && this.mCurrentDragOverTarget.parentNode.localName == "hbox") 
context:   onDragCloseTarget: function ()  {    // if the mouse is not over a menu, then close everything.    if (!this.mCurrentDragOverTarget) {      this.onDragCloseMenu(document.getElementById("PersonalToolbar"));      return    }    // The bookmark button is not a sibling of the folders in the PT    if (this.mCurrentDragOverTarget.parentNode.id == "NC:PersonalToolbarFolder")      this.onDragCloseMenu(document.getElementById("PersonalToolbar"));    else      this.onDragCloseMenu(this.mCurrentDragOverTarget.parentNode);  },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/fa2296feaa84cc2f292243544dec930d05d97c1d/navigatorDD.js/buggy/suite/browser/navigatorDD.js