Redorect after login

[cX_Java]

Hey guys,

i tried to login into a page

http://xyz.de/login

and read the source code, but if i set up the URLConnection with the right POST parameters i get this as response:

<script>document.location.href='http://xyz.de'</script>

so the login didn't work but i don't know why.
Can someone help me with this?