function subOver(url, img){
	img.src = url;
}
function navCurrent(target){
	document.getElementById(target).onmouseout="";
	var path = document.getElementById(target).src.split("_");
	document.getElementById(target).src = path[0]+"_on.gif";
}
function navDot(target){
	document.getElementById(target).style.display="block";
}