function xml_comment()
    {
    
    var xml_str;
    
    xml_str = '<?xml version="1.0" encoding="utf-8" ?>';
    xml_str +='<fields>'; 
    xml_str +='<field>';
    xml_str +='<fieldname>f_comment</fieldname>';
    xml_str +='<fieldlbl>lbl_comment</fieldlbl>';
    xml_str +='<validation>';    
    xml_str +='<routine type="reg" message="Comment required">\\w+</routine>';    
    xml_str +='<routine type="length" message="Comment length to long(max 250 chars)">500</routine>';    
    xml_str +='</validation>';
    xml_str +='</field>';               
    xml_str +='</fields>';

    return xml_str;
    
    }