Open login page , insert logon information and click loginbutton 
<p>I want to open a logon page like www.site.com/login.php</p>

<p>insert username and password </p>

<p>and login button be invoke .</p>

<p>All of this should be done progroamlly in a server (not in a browser )</p>

<p>is it possible to do thsi ?</p>
