rem: getWebNavigation().goForward(); 
add: try { getWebNavigation().goForward(); } catch(ex) { } 
context: function BrowserForward(){  getWebNavigation().goForward();  UpdateBackForwardButtons();}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/ed707504b78d543bdeec11e9eb5fd2337259612c/navigator.js/buggy/suite/browser/navigator.js