//stackoverflow.com/questions/11584061/automatically-adjust-height-to-contents-in-ace-cloud-9-editor
    // This is useless since acebasic.css has textarea rule
    function heightUpdateFunction(editor) {

        // http://stackoverflow.com/questions/11584061/
        var newHeight =
                  editor.getSession().getScreenLength()
                  * editor.renderer.lineHeight
                  + editor.renderer.scrollBar.getWidth();

        $('#send_txtarea').height(newHeight.toString() + "px");
