rem: event.preventDefault(); event.preventBubble(); event.preventCapture(); event.stopPropagation(); 
add: aTriggeringEvent.preventDefault(); aTriggeringEvent.preventBubble(); aTriggeringEvent.preventCapture(); aTriggeringEvent.stopPropagation(); 
context: function BrowserLoadURL(aTriggeringEvent, aPostData){  var url = gURLBar.value;  if (url.match(/^view-source:/)) {    BrowserViewSourceOfURL(url.replace(/^view-source:/, ""), null, null);  } else {    if (gBrowser.localName == "tabbrowser" &&        aTriggeringEvent && 'altKey' in aTriggeringEvent &&        aTriggeringEvent.altKey) {      content.focus();      var t = gBrowser.addTab(url, null, null, aPostData); // open link in new tab      gBrowser.selectedTab = t;      gURLBar.value = url;      event.preventDefault();      event.preventBubble();      event.preventCapture();      event.stopPropagation();    }    else        loadURI(url, null, aPostData);    content.focus();  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/f4913093ebe36a876cfe4cbe6116988171bb878e/browser.js/buggy/browser/base/content/browser.js