add:  if (e.button != 0) return;  
context: function onDblClick(e) {  var t = e.originalTarget;  if (t.localName != "treechildren")    return;  openSelectedFile();}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/51e23bc7e5e4bfc0d22d8b2c432ef50e3cc98b87/filepicker.js/buggy/toolkit/components/filepicker/content/filepicker.js