rem: && aWalker.currentNode.localName.toLowerCase() == this.mFindParams[0].toLowerCase(); 
add: && re.test(aWalker.currentNode.localName); 
context:   doFindElementsByTagName: function(aWalker)  {    return aWalker.currentNode           && aWalker.currentNode.nodeType == Node.ELEMENT_NODE           && aWalker.currentNode.localName.toLowerCase() == this.mFindParams[0].toLowerCase();  },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/e8f1133655d27d300b216f2924074ea18f4c1791/dom.js/clean/extensions/inspector/resources/content/viewers/dom/dom.js