The highlight effect temporarily applies a light yellow coloring to any element that it's called on. Let's put a simple example together so we can see the effect in action. In a new page in your text editor, add the following code:
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01//EN" "http://www.w3.org/TR/html4/strict.dtd">
<html lang="en">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8">
<title>jQuery UI Highlight Effect</title>
</head>
<body>
<button id="a">Next</button>
<button id="b">Next</button>
<button id="c">Next</button>
<button id="d">Next</button>
<p>Only one of these buttons will take you to the next page, choose wisely (click the hint button for help).
<button id="Hint">Hint</button>
<script type="text/javascript" src="jqueryui1.6rc2/jquery-1.2.6.js"></script>
<script...