error alert box when clicking between 2 links
<p>I seem to get the random alert when I am clicking between two links and all that is returned is an alert that reads <code>error</code>. There is no javascript error logged in the console. The code being executed each time I move between the links is </p>

<pre><code>jQuery.validator.setDefaults({
    errorElement: "p",
    errorClass: "s_error_msg",
    errorPlacement: function(error, element) {
        error.insertAfter(element);
    },
    highlight: function(element, errorClass, validClass) {
        $(element).addClass("error_element").removeClass(validClass);
        $(element).parent("div").addClass("s_error_row");
    },
    unhighlight: function(element, errorClass, validClass) {
        $(element).removeClass("error_element").addClass(validClass);
        $(element).parent("div").removeClass("s_error_row");
    }
});
$("#login").validate();​
</code></pre>

<p>What could be causing such an alert to appear and what do I need to fix?</p>

<p><strong>EDIT</strong></p>

<p>I came across a similar error while traversing the interwebs but for the life of me can't figure it out. If you keep going back and forth between Login and Register multiple times, it throws an error - <a href="https://shoppica2.com/index.php?route=account/login" rel="nofollow">https://shoppica2.com/index.php?route=account/login</a></p>

<p><strong>EDIT</strong></p>

<p>I have attached an image of the error. I am not calling Facebook but still get the same error.</p>

<p><img src="http://i.stack.imgur.com/OHSrL.png" alt="enter image description here"></p>
