Prototype absolutize() Method

Syntax:

element.absolutize();

Return Value:

An absolutely-positioned HTML element

Example:

<html>
<head>
<title>Prototype examples</title>
<script type="text/javascript" 
   src="/javascript/prototype.js">
</script>
<script>

function changetoAbs(){
   node = $("firstDiv");
   node.style.fontSize='20px';
   //node.style.position = 'absolute';
   node.absolutize();
   node.style.border = '1px dashed #f00';
   node.style.left = '100px';
}
</script>
</head>

<body>
   <div id="firstDiv">
      <p>This is first paragraph</p> 
   </div>

   <br />
   <input type="button" value="Make Absolute" 
             onclick="changetoAbs();"/>

</body>
</html>

To understand it in better way you can Try it yourself.