Jquery - how to inject an event handler from embedded iframe into parent DOM elements
<p>New to jquery and trying to get injection working. Any help appreciated.</p>

<p>I have an iframe embedded into a parent page.  From within the iframe (where I instantiate jquery) I wish to inject an 'onmouseover' event handler to all DOM elements of class = "btn" in that parent page. All of these elements are in div levels within a top level container div with id = "contentWrapper"</p>

<p>Am assuming it'll be something like the following, but any tips really welcomed to point me in the right direction.</p>

<pre><code>// am assuming I can see &lt;div id='contentWrapper'&gt; element in parent frame from within the iframe
// not sure where to place the 'btn' class reference.

$('contentWrapper').on('onmouseover', function(event){ 
     // some activity here 
});
</code></pre>
