rem: leakDetector.vtable.markObject(document, true); leakDetector.vtable.traceObject(window._content, leakDetector.verbose); leakDetector.vtable.markObject(document, false); 
add: leakDetector.markObject(document, true); leakDetector.traceObject(window._content, leakDetector.verbose); leakDetector.markObject(document, false); 
context: function traceDocument(){    // keep the chrome document out of the dump.    leakDetector.vtable.markObject(document, true);    leakDetector.vtable.traceObject(window._content, leakDetector.verbose);    leakDetector.vtable.markObject(document, false);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/987b815dbfd1ba586dd0e1f5d535ec1a9b2d95fa/navigator.js/buggy/xpfe/browser/resources/content/navigator.js