rem: event.preventBubble(); 
add: event.stopPropagation(); 
context: function middleMousePaste(event){  var url = readFromClipboard();  if (!url)    return;  var postData = { };  url = getShortcutOrURI(url, postData);  if (!url)    return;  try {    addToUrlbarHistory(url);  } catch (ex) {    // Things may go wrong when adding url to session history,    // but don't let that interfere with the loading of the url.  }  openUILink(url,             event,             true /* ignore the fact this is a middle click */);  event.preventBubble();}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/ee372ff16722d388105bcbd349e08b5bc0ed7211/browser.js/clean/browser/base/content/browser.js