rem: gMessagePaneFrame = document.getElementById("messagepane"); 
add: gMessagePaneFrame = document.getElementById("messagepane").contentWindow; 
context: function GetMessagePaneFrame(){    if (gMessagePaneFrame) return gMessagePaneFrame;    gMessagePaneFrame = document.getElementById("messagepane");    return gMessagePaneFrame;}
meta: 8395	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/8395/23bbbdbeb7a7f3ae77cad3bd747dcb2381d9f3e3/msgMail3PaneWindow.js/buggy/mailnews/base/resources/content/msgMail3PaneWindow.js