rem: if (!node || node.nodeType != Node.ELEMENT_NODE) return false; 
add: if (!node || node.nodeType != nsIDOMNode.ELEMENT_NODE) return false; 
context:   cmdInspectBrowserIsValid: function()  {    var node = viewer.selectedNode;    if (!node || node.nodeType != Node.ELEMENT_NODE) return false;        var n = node.localName.toLowerCase();    return n == "tabbrowser" || n == "browser" || n == "iframe" || n == "frame" || n == "editor";  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/1bdedd18e398f941e1efe6c0448264ea16e357a1/dom.js/buggy/extensions/inspector/resources/content/viewers/dom/dom.js