rem: setTimeout(function() { self.asyncUpdateUI(); }, 0); 
add: function () { return browser.warnAboutClosingTabs(true); }); 
context:       setTimeout(function() { self.asyncUpdateUI(); }, 0);
meta: 10520	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10520/7942d63cca8d6ee84e391517a670b935cdabcca4/browser.js/buggy/browser/base/content/browser.js