rem: function saveAttachment(contentType, url, displayName, messageUri) 
add: function saveAttachment(aAttachment) 
context: function saveAttachment(contentType, url, displayName, messageUri){  messenger.saveAttachment(contentType, url, displayName, messageUri);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/06c572f05bfbf03d103b6c641878b4f4a0a8aa6f/msgHdrViewOverlay.js/clean/mailnews/base/resources/content/msgHdrViewOverlay.js