rem: if(window.sameplace.isActive()) 
add: if(window.sameplace && window.sameplace.isActive()) 
context: function isActiveSomewhere() {    var windows = Cc['@mozilla.org/appshell/window-mediator;1']        .getService(Ci.nsIWindowMediator)        .getEnumerator('');    while(windows.hasMoreElements()) {        var window = windows.getNext();        if(window.sameplace.isActive())            return true;    }    return false;}
meta: 1705	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/1705/70dc75af03d44d36b8358bf9cc9e2fde0985eb7d/overlay_impl.js/buggy/chrome/content/overlay_impl.js