rem: catch(ex) { 
add: else { var sessionHistory = getWebNavigation().sessionHistory; var currentIndex = sessionHistory.index; var entry = sessionHistory.getEntryAtIndex(currentIndex - 1, false); var url = entry.URI.spec; openUILinkIn(url, where); 
context: function BrowserBack(){  try {    getWebNavigation().goBack();  }  catch(ex) {  }}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/865bfc75b23ed219acdbb216fba1abcd6d531fc1/browser.js/buggy/browser/base/content/browser.js