rem: if (aFlavour != "application/x-moz-file") return; 
context:   onDragOver: function (aEvent, aFlavour, aDragSession)    {      if (aFlavour != "application/x-moz-file")        return;      var attachmentBucket = document.getElementById("attachmentBucket");      attachmentBucket.setAttribute("dragover", "true");    },
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/1287323a34b32e2d9336d559697e782c4ae05055/MsgComposeCommands.js/clean/mailnews/compose/resources/content/MsgComposeCommands.js