add: if (gIsEditableMsgFolder) ShowEditMessageButton(); 
context:     onEndHeaders: function()     {      // WARNING: This is the ONLY routine inside of the message Header Sink that should       // trigger a reflow!            if (this.NotifyClearAddresses != undefined)        NotifyClearAddresses();      ClearHeaderView(gCollapsedHeaderView);      ClearHeaderView(gExpandedHeaderView);            ShowMessageHeaderPane();      UpdateMessageHeaders();//      if (gIsEditableMsgFolder)//        ShowEditMessageButton();    },
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/1875274a8fa019f89c21e9611482844b208e382d/msgHdrViewOverlay.js/buggy/mailnews/base/resources/content/msgHdrViewOverlay.js