How can I make a external phpbb-login without redirecting to another page?
<form action="./phpBB3/ucp.php?mode=login" method="post">
 <h3><a href="./phpBB3/ucp.php?mode=login">Login</a>&nbsp; &bull; &nbsp; <a href="./phpBB3/ucp.php?mode=register">Register</a></h3>
 <fieldset>
    <label for="username">Username:</label>&nbsp;
    <input type="text" name="username" id="username" size="10" title="Username" />
    <label for="password">Password:</label>&nbsp;
    <input type="password" name="password" id="password" size="10" title="Password" />
    <input type="submit" name="login" value="Login" />
 </fieldset>
</form>

<input type="hidden" name="redirect" value="./somefile.html" />