display an alert if active
<p><strong>ORIGINAL QUESTION:</strong></p>

<p>I have the following script:</p>

<p><a href="http://jsfiddle.net/mnXdv/12/" rel="nofollow">http://jsfiddle.net/mnXdv/12/</a></p>

<p>It works well, but I need to add a little extra too it.</p>

<p>I need to display an alert when an active nav is clicked a second time.</p>

<p>For example, if nav1 is clicked to activate the dropdown, if nav1 is clicked again, it should display an alert,  If some other part of the page is clicked when nav1 is active, it should not display an alert.</p>

<p>Also, if nav1 is active and nav2 is activated, no alert should be displayed.  However, when nav2 is active, and if nav2 is clicked again, it should display an alert.</p>

<p><em>Sorry for closing the previous question which was similar to this, it had a fundamental issue with it.</em></p>

<p><strong>EDIT 1:</strong></p>

<p>All the rest of the original behaviour of the script must remain intact.</p>
