title: How can I add a simple counter function in javascript jquery?
body: <p>I'm using Shadowbox a jquery overlay and I wanted to count how many people are actually using the overlay. Thus, I would need a function that would write a counter to a file or sending a query through a php api...</p>
  
  <p>has to be a a php url api because I cant use php on the server where the overlay is.</p>
  
  <p>So I need help with executing a javascript function on the overlay click, tips on how to make a counter query through GET method. </p>
  
  <p>Thanks</p>
  
  <pre><code>&lt;script type="text/javascript"&gt;
  </code></pre>
  
  <p>Shadowbox.init({
          handleOversize: "resize",
                 overlayOpacity: 0.9</p>
  
  <pre><code>           });
  </code></pre>
  
  <p></p>