var jsnavIndex = [0,10,20,30,40,50,60,70];

function jsnavOver(a, on) {
	var index = parseInt(a.id.split("jsnavLink").join(""));
	var set = Math.floor(index / 10);
	index = index % 10;
	var img;
	var imageBaseName;
	for (x=set*10 + 0; x<=set*10 + 7; x++) {
		img = document.getElementById("jsnavImg" + x);
		if (img) {
			imageBaseName = img.src.split(".png").join("").split("_on").join("");
			img.src = imageBaseName + (((on && x== set*10 + index) || (!on && x==jsnavIndex[set])) ? "_on.png" : ".png");
		}
	}
}

function jsnavSelect(a) {
	var index = parseInt(a.id.split("jsnavLink").join(""));
	var set = Math.floor(index / 10);
	jsnavIndex[set] = index;
	index = index % 10;
	for (x=set*10 + 0; x<=set*10 + 7; x++)
		if (document.getElementById("jsnavContent" + x))
			document.getElementById("jsnavContent" + x).style.display = (x == set*10 + index) ? "block" : "none";
	jsnavOver(a, false);
}