rem: if (children[i].tagName == "treeitem") 
add: if (children[i].localName == "treeitem") 
context: function findFirstTreeItem(tree) {  var children = tree.childNodes;    var treechildren;  for (var i=0;i<children.length; i++) {    if (children[i].tagName == "treechildren") {      treechildren = children[i];      break;    }  }  var children = treechildren.childNodes;  for (var i=0; i<children.length; i++) {    if (children[i].tagName == "treeitem")      return children[i];  }}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/c613e3151096f0000d6e6fe527b7c21e81036824/AccountManager.js/clean/mailnews/base/prefs/resources/content/AccountManager.js