Login Form Not Working Properly

Hello, i added the code below to my wordpress header but when i use it it goes to the login page instead of just logging in, anyone know why?

This is the link to my page:
web03.lax1.pronethosting.net/~cravedga/

This is the Code:

<form name="loginform" id="loginform" action="<?php echo site_url('wp-login.php', 'login_post') ?>" method="post">
<font style="color:black; font-family:Arial; font-size:11px;">Login or Register: </font> <input type="text" style="color:gray; font-family:Arial; font-size:10px;" name="log" id="user_login" class="input" value="Username" size="10" tabindex="10" onfocus="clearText(this)" onblur="clearText(this)"/>
<input type="password" style=" font-family:Arial; font-size:10px;" name="log" id="user_login" name="pwd" id="user_pass" class="input" value="*******" size="10" tabindex="20"  onfocus="clearText(this)" onblur="clearText(this)" />
<input type="submit" style="color:gray; font-family:Arial; font-size:10px;" name="wp-submit" id="wp-submit" value="Login" tabindex="100" />
<input type="hidden" name="redirect_to" value="<?php echo attribute_escape($redirect_to); ?>" />
<input type="hidden" name="testcookie" value="1" />
</p></form>