title: Alert not appearing in popup.html of chrome extension
body: <p>I am still very new with chrome extensions and am just testing things out.
  Right now I have a popup.html that with a short form that I want to create an alert when submit is clicked. I cannot for the life of me figure out why it's not working.</p>
  
  <pre><code>&lt;!doctype html&gt;
  &lt;html&gt;
  &lt;head&gt;
  &lt;title&gt;Test&lt;/title&gt;
  &lt;script type="text/javascript" src="popup.js"&gt;
  
  &lt;/script&gt;
  &lt;/head&gt;
  &lt;body onload="alert('open')"&gt;
  &lt;form&gt;
  Username: &lt;input type='text' id="username" name='username'&gt;&lt;/input&gt;
  Password: &lt;input type='password' id='password' /&gt;
            &lt;button onclick="alert('test');return false;"&gt;Login&lt;/button&gt;
  &lt;/form&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>Any suggestions?</p>
  
  <p>Edit: I even made an onload in the body tag to see if an alert would open there but it doesn't. In the popup.js I have an alert open on window.onload and that works however.</p>