​x
 
<html>
<head>
<script type="text/javascript">
function changeBorder()
  {
  document.getElementById("compman").border="3"
  }
</script>
</head>
<body>
​
<img id="compman" src="/i/eg_compman.gif" alt="Computerman" />
<br /><br />
<input type="button" onclick="changeBorder()" value="Change border" />
​
</body>
</html>
​