add: return true; 
context:   onDragStart: function (aEvent, aXferData, aDragAction)  {    var target = aEvent.target;    // Prevent dragging from invalid regions    // can't drag from the empty areas    if (target.id == "bookmarks-menu" ||        target.id == "bookmarks-chevron" ||        target.id == "bookmarks-ptf")      return false;    if (!BookmarksMenu.isBTBookmark(target.id))      return false;    // Prevent dragging out of menupopups on non Win32 platforms.     // a) on Mac drag from menus is generally regarded as being satanic    // b) on Linux, this causes an X-server crash, (bug 151336)    // c) on Windows, there is no hang or crash associated with this, so we'll leave     // the functionality there.     if (navigator.platform != "Win32" && target.localName != "toolbarbutton")      return;    // a drag start is fired when leaving an open toolbarbutton(type=menu)     // (see bug 143031)    if (this.isContainer(target)) {      if (this.isPlatformNotSupported)         return;      if (!aEvent.shiftKey && !aEvent.altKey && !aEvent.ctrlKey)        return;      // menus open on mouse down      target.firstChild.hidePopup();    }    var selection  = BookmarksMenu.getBTSelection(target);    aXferData.data = BookmarksUtils.getXferDataFromSelection(selection);  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/c13c92616945047f29b14275413e9e4d11773c91/bookmarksMenu.js/clean/browser/components/bookmarks/content/bookmarksMenu.js