var whichNav="";
	
	function setSelected(w) {
	   	document.images[w].src="img/btn-"+w+"-o.png";
		whichNav=w;
	}
	
	function over(z) {
		if (z != whichNav) {
		document.images[z].src="img/btn-"+z+"-o.png";
		}
	}
	
	function out(x) {
		if (x != whichNav) {
		document.images[x].src="img/btn-"+x+".png";
		}
	}
	/*<a href="link" onmouseover="over('imageName');" onmouseout="out('imageName');"><img src="img/nav-imageName.gif" name="imageName"></a>
	<script type="text/javascript"> 
	setSelected("home");
	</script>*/