add:  if (e.button != 0) return;  
context: function onDblClick(e) {  var t = e.originalTarget;  if (t.localName != "treechildren")    return;  openSelectedFile();}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/10234/b976cc7740d413b58a8f43f54165becc5fa72552/filepicker.js/clean/toolkit/components/filepicker/content/filepicker.js