i ve tried to auto login into an asp.net website. using javascript i can automatically log in to the 'irctc' website but the same code have not worked for the website i ve tried. it have not even fill the username and password in the required filed. it just taken me to the login page of that website. the code i ve used is

<script type="text/javascript">function autoLogin() {document.webservices.submit();} </script></head><a href="javascript:autoLogin()">Log me automatically in</a><BODY><form name="webservices" method=post action="zzzzzzz" target="new_window" onSubmit="window.open('', 'new_window', 'width=450,height=300,status=yes,resizable=yes,scrollbars=yes)"> <input type=hidden id=UserName name="userName" value="xxxxxx"></input> <input type=hidden id=Password name="password" value="yyyyyy"></input> </form></body>
i dont know where i am wrong. pls correct me.