rem: if (item.src != null) 
add: if ("src" in item && item.src) 
context: function getSource(item){  // Return the correct source without strict warnings  if (item.href != null)    return item.href;  if (item.src != null)    return item.src;  return null;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/071a6664d27f5b2bbaa4f824ebb35b65944b21ac/pageInfo.js/buggy/browser/base/content/pageInfo.js