function over(a,b)
{
	document[a].src=b;
}

startList = function()
{
	if(document.all&&document.getElementById)
	{
		navRoot = document.getElementById('nav');
		for(i=0; i < navRoot.childNodes.length; i++)
		{
			node = navRoot.childNodes[i];
			if(node.nodeName == 'LI')
			{
				node.onmouseover=function()
				{
					this.className += ' over';
				}
				node.onmouseout=function()
				{
					this.className = this.className.replace(' over', '');
				}
			}
		}
	}
}
window.onload = startList;