prova con questo codice, ovviamente modifica i path.
Codice PHP:
<html>
<head>
<title>prova</title>
<script type="text/javascript" src="jquery-1.3.1.min.js"></script>
<style>
#links
{
background:lightgreen;
width:300px;
}
#links a
{
margin-right:20px;
font-weight:bold;
font-size:30px;
color:#000;
}
#links a:hover
{
color:red;
}
#content
{
height:300px;
background:pink;
margin-top:20px;
}
</style>
<script type="text/javascript">
function loadContent(elementSelector, sourceUrl)
{
$(""+elementSelector+"").load(sourceUrl);
}
</script>
</head>
<body>
<div id="links">
[url="javascript:loadContent('#content','prova1.html');"]Link 1[/url]
[url="javascript:loadContent('#content','prova2.html');"]Link 2[/url]
</div>
<div id="content"></div>
</body>
</html>