rem: return BeginDragTree(event, tree, "text/nsfolder"); 
add: var treeItem = event.target.parentNode.parentNode; if (!treeItem)	return(false);  gSrcCanRename = treeItem.getAttribute('CanRename');  var serverType = treeItem.getAttribute('ServerType') if ( serverType == "nntp") { debugDump("***serverType == nntp \n"); return(false); }  return BeginDragTree(event, tree, "text/nsmessageOrfolder"); 
context: function BeginDragFolderTree(event){	debugDump("BeginDragFolderTree\n");       if (event.target.localName != "treecell" &&           event.target.localName != "treeitem")            return false;	var tree = GetFolderTree();	return BeginDragTree(event, tree, "text/nsfolder");}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/63fbb90dec83527d9ee9c4224fd79cb87c5c8c07/messengerdnd.js/clean/mailnews/base/resources/content/messengerdnd.js