rem: return msgCompose.bodyConvertible( window.editorShell.contentWindow.document.childNodes[1]); 
add: return msgCompose.bodyConvertible(); 
context: function DetermineConvertibility(){    if (!msgCompose.composeHTML)        return msgCompConvertible.Plain;    try {        return msgCompose.bodyConvertible(             window.editorShell.contentWindow.document.childNodes[1]);    } catch(ex) {}    return msgCompConvertible.No;}
meta: 9421	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/9421/534f2830db4d5d22e92750a2e1782229bec09d21/MsgComposeCommands.js/buggy/mailnews/compose/resources/content/MsgComposeCommands.js