function showmessage(url) {
   document.getElementById('messagebox').style.display = 'block';
   document.getElementById('messageboximage').src = "825_DE-Designelemente_Mastertemplate-loading%2egif.gif";
   if (typeof url != "undefined") location = url;
}
function btn_open(url) {
   if (typeof url != "undefined") location = url;
}