rem: if (gURLBar.value != gLastValidURLStr) 
add: if (gURLBar && gURLBar.value != gLastValidURLStr) 
context: function UpdatePageProxyState(){  if (gURLBar.value != gLastValidURLStr)    SetPageProxyState("invalid", null);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/0e799dbef1ba9916e073356644a74553011eb9d3/browser.js/clean/browser/base/content/browser.js