CODE EXAMPLE FOR JAVASCRIPT

window.open

<script type="text/javascript">
  function fnc1()
  {
      var a=window.location.href;

      username="p";
      password=1234;
      window.open(a+'?username='+username+'&password='+password,"");

      var url_safe_username = encodeURIComponent(username);
      var url_safe_password = encodeURIComponent(password);
      var url = "http://localhost:8080/login?cid=" + url_safe_username + "&pwd=" + url_safe_password;
      window.open(url);
  }   
</script>
<input type="button" onclick="fnc1()" />