var gProductLink = null;
var gProductListItem = null;
var gProductSpan = null;
var gProductShowing = 0;

function hide_prodVersDesc() {
	
	if (!gProductShowing) {
		return;
	}
	gProductLink.className = "noncurrent";
	gProductListItem.className = "noncurrent";
	gProductSpan.style.display = "none";
	
	gProductLink = null;
	gProductListItem = null;
	gProductSpan = null;
	gProductShowing = 0;
}

function show_prodVersDesc (link, text) {
	
	if (gProductLink == link) {
		return;
	}
	
	
	// if something showing, hide it and show ourselves
	hide_prodVersDesc();
//	if (gProductShowing) {
//		gProductLink.className = "noncurrent";
//		gProductListItem.className = "noncurrent";
//		gProductSpan.style.display = "none";
//	}
	
	gProductLink = link;
	gProductListItem = document.getElementById (text+"_tab");
	gProductSpan = document.getElementById (text);
	
	gProductLink.className = "current";
	gProductListItem.className = "current";
	gProductSpan.style.display = "block";
	gProductShowing = 1;
	
}