add: OnTagsChange(); 
context: function RemoveAllMessageTags(){  var selectedMsgUris = GetSelectedMessages();  if (!selectedMsgUris.length)    return;      for (var i = 0; i < selectedMsgUris.length; ++i)  {    // remove all tags by removing all their tag keys at once    // (using a msgHdr's setStringProperty won't notify the threadPane!)    var msgHdr = messenger.msgHdrFromURI(selectedMsgUris[i]);    msgHdr.label = 0; // remove legacy label    msgHdr.folder.getMsgDatabase(msgWindow)          .setStringProperty(msgHdr.messageKey, "keywords", "");  }}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/d3ddac681ffe61ba119fbad04310ff911caf7f93/mailWindowOverlay.js/buggy/mailnews/base/resources/content/mailWindowOverlay.js