jquery validator in IE7

jquery validator in IE7

Hi, i'm using the JQuery validator plugin from this site:
 
Works excellent so far, except in IE7... It just doesn't do any checks, and when i press on a button it doesn't respond to it either... Anyone else encountered problems in IE7 ? Or is it just that my code isn't good?
 
This is what i have for a login:
  1.  var v = $("#login").validate({
      errorClass: "warning",
      rules: {
       email: {
        required: true,
        email: true
       },
       password: {
        required: true,
        minlength: 5
       }
      },
      messages: {
       email: {
        required: "U heeft nog geen email adres opgegeven",
        email: "Ongeldig email adres"
       },
       password: {
        required: "Geef aub een wachtwoord op",
        minlength: "Uw wachtwoord moet minimaal uit 5 characters bestaan"
       }
      },
      submitHandler: function() {
       document.forms[0].submit();
      }
     });
























 
And this is the html that i have: (and i think the import things to notice in this html code is the <form> tag and that the submit button is a <button></button> instead of a <input type="submit".... /> )
  1. <form name="login" id="login" method="post" action="">
        <fieldset>
            <legend>Inloggen</legend>
            <p>U kunt hier inloggen met uw account.<br />
      Heeft u nog geen account? Klik dan <a href="<?= $_baseurl; ?>registreren/">hier</a> om u te registreren!</p>
            <ol>
                <li>
                    <label class="form_label" for="email"><strong>Email adres:</strong></label>
                    <input type="text" id="email" name="email" style="width:200px;" />
                </li>
                <li>
                    <label class="form_label" for="password"><strong>Wachtwoord:</strong></label>
                    <input type="password" id="password" name="password" style="width:200px;" />
                </li>
            </ol>
            <br />
         <div style="text-align:center;"><button name="inloggen" value="inloggen" class="button-primary">Inloggen</button></div>
            <br />
      <br />
        </fieldset>
    </form>



















 
Anyone any idea how to make it work in IE7...??