title: XHTML Favicon - proper usage
body: <p>What is the proper way to have a favicon for a website in XHTML?</p>
  
  <p>1.Does it have to be .ico or can it be .gif or .png?</p>
  
  <p>2.Is this the proper code for embedding and rel value:</p>
  
  <pre><code>&lt;link rel="shortcut icon" href="http://yoursitedotcom.here/favicon.ico"/&gt;
  </code></pre>
  
  <p>3.Does the favicon file have to reside in the root of the site or it can be anywhere and correctly specified in the link href attribute?</p>
  
  <p>4.Anything else?</p>
  
  <p>Thank you.</p>