rem: try { this.vtable = createInstance("@mozilla.org/xpcom/leakdetector;1", "nsILeakDetector"); } catch (err) { } 
context: function LeakDetector(verbose){    this.verbose = verbose;    try {	    this.vtable = createInstance("@mozilla.org/xpcom/leakdetector;1", "nsILeakDetector");	} catch (err) {	}}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/d4c402d02e7e55b188f3003fa6c191769168bcdb/navigator.js/clean/suite/browser/navigator.js