function popup(url,target)
{
	w = screen.width*(3/4);
	h = screen.height*(3/4);
	l = (screen.width-w)/2;
	t = (screen.height-h)/2;
	widthHeight = "width="+w+",height="+h+",left="+l+",top="+t+",menubar=no,resizable=no,scrollbars=no,status=no,toolbar=no,location=no";
	window.open(url,target,widthHeight);
	return true
}

function openchat(oForm)
{
	if (oForm.nick.value.length == 0)
	{
		alert ('Bitte gib einen Nicknamen ein!');
	}
        if (oForm.chan.value.length == 0)
	{
		alert ('Bitte gib einen Chatraum ein!');
	}
	else
	{ s = "http://www.irczone.ch/chat/chat.php" + '?nick=' + oForm.nick.value + "&chan=" + oForm.chan.value + "&pass=" + oForm.pass.value + "&user=" + oForm.user.value;
		popup(s,'chatroom');
	}
	return false;
}