title: Determine which browser is being used to visit my site
body: <p>Can someone tell me how I can determine (using JavaScript etc.) what browser is being used to visit my site?</p>
  
  <p>I want to redirect to a different page based on these scenarios:</p>
  
  <ul>
  <li>Wheater the user is browsing using Safari on the iPhone.</li>
  <li>Using IE on a desktop</li>
  <li>Using IE on a WP7 mobile device.</li>
  </ul>
  
  <p>Thanks.</p>