title: HTML Button Change Image Source
body: <p>Okay, I was wondering if this is possible. 
  I want an image, and a totally separate button. When the button is clicked, I would like the Img Src to change from "images/test" to "images/test2"</p>
  
  <p>Is this possible?</p>
  
  <p>Let's just say I have a very simple site, with just an image and a button</p>
  
  <pre><code> &lt;html&gt; 
  &lt;head&gt;...
  &lt;/head&gt;
  &lt;body&gt;
  &lt;img src="images/test"/&gt;
  &lt;br/&gt;&lt;br/&gt;&lt;br/&gt;
  &lt;button&gt;Click to change image!&lt;/button&gt;
  &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>How can I change this very simple HTML to do what I want?</p>