Plug-in JavaScript Chapter 3, Example 09 (Click on the icon to view the source for copy and pasting)
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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
   "http://www.w3.org/TR/html4/loose.dtd">
<html><head><title>Plug-in JavaScript: Example 9</title>

<script src="PJ.js"></script>
<script>Initialize()</script>

</head><body>

<div id='square'>I'm a square</div>

<script>

window.onload = function()
{
   S('square').width           = Px(100)
   S('square').height          = Px(100)
   S('square').backgroundColor = 'yellow'

   alert("The value returned for the width of 'square' is: "   +
      S('square').width + "\nAfter using NoPX() this becomes " +
      NoPx(S('square').width))
}

</script>