Raptor2013,
<html>
<head>
<title></title>
<script>
var mas1 = ["inf1.0", "inf1.1", "inf1.2", "inf1.3"];
var mas2 = ["inf2.0", "inf2.1", "inf2.2", "inf2.3"];
function inf(val) {
document.getElementById("information1").innerHTML = mas1[val];
document.getElementById("information2").innerHTML = mas2[val];
}
</script>
</head>
<body>
<div id="information1"></div><div id="information2"></div>
<div>
<ul>
<li onClick="inf(0)"><a href="#">1</a></li>
<li onClick="inf(1)"><a href="#">2</a></li>
<li onClick="inf(2)"><a href="#">3</a></li>
<li onClick="inf(3)"><a href="#">4</a></li>
</ul>
</div>
</body>
</html>