onDragOver: function () 
onDragOver: function(aEvent, aFlavour, aDragSession) 
  onDragOver: function ()    {      return true;    },
5459	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/5459/49e767d479d3bdbe5ba647fe113bafbdae087bae/browser.js/clean/browser/base/content/browser.js