Region Markup


<head>
  <layout>
    <root-layout width="640" height="320" />
    <region id="a" top="20" left="20" 
            width="50" height="50" />
    <region id="b" .... />
  </layout>
</head>
<body>
  ...
  <img region="a" 
     src="http://www.example.com/foo" />
  ...
</body>