rem: debug("some silly cancel handler /*"+hPrefWindow.cancelHandlers[i]+"*/ failed: "+ e); 
add: dump("some silly cancel handler /*"+hPrefWindow.cancelHandlers[i]+"*/ failed: "+ e); 
context:       onCancel:        function ()          {            for( var i = 0; i < hPrefWindow.cancelHandlers.length; i++ )              try {                hPrefWindow.cancelHandlers[i]();              } catch (e) {                debug("some silly cancel handler /*"+hPrefWindow.cancelHandlers[i]+"*/ failed: "+ e);              }          },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/d5ad8fecbc5ebc197dc8f83e754d67615c85baa4/nsPrefWindow.js/clean/suite/common/pref/nsPrefWindow.js