/*
	Example
	
	<ul id="ListNavi">
	<li onclick="setCurrentItem(this.parentNode.id, 0);"><a href="#">Home</a></li>
	<li onclick="setCurrentItem(this.parentNode.id, 1);"><a href="#">Leistungen</a></li>
	<li onclick="setCurrentItem(this.parentNode.id, 2);"><a href="#">Referenzen</a></li>
	<li onclick="setCurrentItem(this.parentNode.id, 3);"><a href="#">Downloads</a></li>
	<li onclick="setCurrentItem(this.parentNode.id, 4);"><a href="#">Network</a></li>
	</ul>
*/
function setCurrentItem(id, number)
{
	for (var i = 0; i < document.getElementById(id).getElementsByTagName("li").length; i++) {
      	document.getElementById(id).getElementsByTagName("li")[i].className = "";
    }
	document.getElementById(id).getElementsByTagName("li")[number].className = "currentItem";
}