form is submitimg even I am using return false
<p>form is submitimg even I am calling return false 
my code</p>

<pre><code>$(document).ready(function() {
    $('.submit').click(function() {
        $('.hour').each(function() {
            var $hours = $(this).val();
            if ($hours == "") {
                alert(" Active Time is required");
                return true;
            }
        });
    });
});​
</code></pre>

<p>submit button</p>

<pre><code> &lt;input type="submit" class="submit" name="Submit" id="Submit" value="Submit" 
onclick="return validateForm();"/&gt;
</code></pre>
