rem: return this.selectedNode ? (this.selectedNode.nodeType == Node.ELEMENT_NODE) : false; 
add: return this.selectedNode ? (this.selectedNode.nodeType == nsIDOMNode.ELEMENT_NODE) : false; 
context:   cmdBlinkIsValid: function()  {    return this.selectedNode ? (this.selectedNode.nodeType == Node.ELEMENT_NODE) : false;  },
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/e9cfc65e834ddfba581bd420d0ba94f0823e1f73/dom.js/clean/extensions/inspector/resources/content/viewers/dom/dom.js