rem: m.addEventListener("command", function(aEvent) { undoCloseTab(aEvent.originalTarget.getAttribute("value")); }, false); 
add: m.addEventListener("command", function() { for (var i = 0; i < keys.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/d94a17c8fc24fd21aeac4e1454ede2328e38116f/browser.js/clean/browser/base/content/browser.js