rem: var aDownloadID = aDownload.targetFile.path; var download = this.doc.getElementById(aDownloadID); 
add: var downloadID = "dl" + aDownload.id; var download = this.doc.getElementById(downloadID); 
context:   onStateChange: function(aWebProgress, aRequest, aStateFlags, aStatus, aDownload)  {    if (aStateFlags & Components.interfaces.nsIWebProgressListener.STATE_STOP) {      var aDownloadID = aDownload.targetFile.path;      var download = this.doc.getElementById(aDownloadID);      if (download)        download.setAttribute("status", "");    }  },
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10234/5089b2dda415f7e24f05d326fd9f480edfca8ee5/DownloadProgressListener.js/clean/toolkit/mozapps/downloads/content/DownloadProgressListener.js