rem: undoCloseTabItem.addEventListener("command", function() { undoCloseTab(0); }, false); 
add: m.addEventListener("command", function() { for (var i = 0; i < undoItems.length; i++) undoCloseTab(); }, false); 
context:     undoCloseTabItem.addEventListener("command", function() { undoCloseTab(0); }, false);
meta: 5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5459/c580b7033bdd75ac2e8074aeeb1cb75b98ee10d7/browser.js/buggy/browser/base/content/browser.js