add: obj.isExternalAttachment = aAttachment.isExternalAttachment; 
context: function cloneAttachment(aAttachment){  var obj = new Object();  obj.contentType = aAttachment.contentType;  obj.url = aAttachment.url;  obj.displayName = aAttachment.displayName;  obj.messageUri = aAttachment.uri;  return obj;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/3613b75b68c5edb1e955250b4c653428e77b3315/msgHdrViewOverlay.js/clean/mail/base/content/msgHdrViewOverlay.js