rem: messenger.saveAttachment(url, displayName, messageUri); 
add: messenger.saveAttachment(contentType, url, displayName, messageUri); 
context: function saveAttachment(contentType, url, displayName, messageUri){  messenger.saveAttachment(url, displayName, messageUri);}
meta: 5872	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/5872/b08e5efce9757ac58861aca6f89bcd7dd0f6eee5/msgHdrViewOverlay.js/buggy/mailnews/base/resources/content/msgHdrViewOverlay.js