add: if (!cx) cx = new Object(); 
context: function getTabContext(cx, element){    if (!element)        element = document.popupNode;    while (element)    {        if (element.localName == "tab")            return getObjectDetails(element.view);        element = element.parentNode;    }    return cx;}
meta: 1567	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/1567/cbc167a7099167af1fe105a28565c817cc9514d8/static.js/buggy/xul/content/static.js