rem:  var win = openDialog("chrome: "_blank", "chrome", node); 
add:  if (node) openDialog("chrome: "_blank", "chrome", node); 
context:   cmdShowPseudoClasses: function()  {    var idx = this.mDOMOutliner.currentIndex;    var node = this.getNodeFromRowIndex(idx);    var win = openDialog("chrome://inspector/content/viewers/dom/pseudoClassDialog.xul",                          "_blank", "chrome", node);  },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/732dc6261a2ac11c9af2f33803020c5eb226df56/dom.js/buggy/extensions/inspector/resources/content/viewers/dom/dom.js