rem: return aWalker.currentNode && aWalker.currentNode.id == this.mFindParams[0]; 
add: return aWalker.currentNode && "id" in aWalker.currentNode && aWalker.currentNode.id == this.mFindParams[0]; 
context:   doFindElementById: function(aWalker)  {    return aWalker.currentNode && aWalker.currentNode.id == this.mFindParams[0];  },
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