Stop user from progressing in a multi-step jQuery form if datepicker value is blank
<p>How would I validate the "date picker" field on step 3 of my multi-step jQuery form. Right now the field just checks if <strong>$('#datepicker').val()</strong> is empty by sending an alert but still lets the user carry on until the next stage. How do you prevent the user from carrying on if the field is blank?</p>

<p>It can be found here: <a href="http://jsfiddle.net/xSkgH/28/" rel="nofollow">http://jsfiddle.net/xSkgH/28/</a></p>

<p>Thanks in advance!</p>
