rem: return aWalker.currentNode && aWalker.currentNode.localName.toLowerCase() == this.mFindParams[0].toLowerCase(); 
add: return aWalker.currentNode && aWalker.currentNode.nodeType == Node.ELEMENT_NODE && aWalker.currentNode.localName.toLowerCase() == this.mFindParams[0].toLowerCase(); 
context:   doFindElementsByTagName: function(aWalker)  {    return aWalker.currentNode && aWalker.currentNode.localName.toLowerCase() == this.mFindParams[0].toLowerCase();  },
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/fd4290685313c90c2ec9ea684a02d0f1c30d76ca/dom.js/clean/extensions/inspector/resources/content/viewers/dom/dom.js