add:  node = document.getElementById("fileAttachmentMenu"); if (node) node.setAttribute("disabled", "true");  
context: function ClearAttachmentList() {   // clear selection  var list = document.getElementById('attachmentList');  list.clearSelection();  while (list.childNodes.length)     list.removeItemAt(list.childNodes.length - 1);}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/1bf116705295b0116603516afe1ebdfff5576170/msgHdrViewOverlay.js/clean/mailnews/base/resources/content/msgHdrViewOverlay.js