validate js

function pietergoosen_kommentaar_validasie_funksie() {
if(is_single() && comments_open() ) { ?>
<script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.7.2/jquery.min.js"></script>
<script type="text/javascript" src="http://ajax.aspnetcdn.com/ajax/jquery.validate/1.9/jquery.validate.min.js"></script>
<script type="text/javascript">
jQuery(document).ready(function($) {
$('#commentform').validate({

rules: {
  author: {
    required: true,
    minlength: 2
  },

  email: {
    required: true,
    email: true
  },

  comment: {
    required: true,
    minlength: 10
  }
},

messages: {
  author: "Vul asseblief 'n geldige naam in.",
  email: "Vul asseblief 'n geldige e-pos adres in.",
  comment: "Die boodskap boks kan nie leeg wees nie!"
},

errorElement: "div",
errorPlacement: function(error, element) {
  element.before(error);
}

});
});
</script>
<?php
}
}
add_action('wp_footer', 'pietergoosen_kommentaar_validasie_funksie');