Hi,
<HTML>
<head></head>
<body>
<form name=fm method=post action="..." target="_top">
<input type=hidden name="service" value="">
<input type=hidden name="nick" value="">
<input type=hidden name="password" value="">
<script type="text/javascript">
<!--
document.fm.submit();
//-->
</script></body></html>
Ganz einfach ;)
cya drl