rem: m.addEventListener("command", function(aEvent) { undoCloseTab(aEvent.originalTarget.getAttribute("value")); }, false); 
add: m.addEventListener("command", function() { for (var i = 0; i < undoItems.length; i++) undoCloseTab(); }, false); 
context:     m.addEventListener("command", function(aEvent) {       undoCloseTab(aEvent.originalTarget.getAttribute("value"));    }, false);
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/7fcd6ffec17a79c4f8d7b0896812b98d72044a55/browser.js/clean/browser/base/content/browser.js