var imgBtnOn = "2.";
var imgBtnOff = "1.";
var imgBtnDel = "btn";
var imgBanDel = "ban";
function btnOn(btn)
{
	if (btn)
	{
		var src = btn.src;
		var tmpsrc = src.split(imgBtnOff);
		btn.src = tmpsrc[0] + imgBtnOn + tmpsrc[1];
		var ban = document.getElementById("banner");
		if (ban)
		{
			tmpsrc = src.split(imgBtnOff);
			src = tmpsrc[0] + "." + tmpsrc[1];

			tmpsrc = src.split(imgBtnDel);
			src = tmpsrc[0] + imgBanDel + tmpsrc[1];
			ban.src = src;
		}
	}
}
function btnOff(btn)
{
	if (btn)
	{
		var src = btn.src;
		var tmpsrc = src.split(imgBtnOn);
		btn.src = tmpsrc[0] + imgBtnOff + tmpsrc[1];
		var ban = document.getElementById("banner");
		if (ban)
		{
			//tmpsrc = src.split(imgBtnOn);
			//src = tmpsrc[0] + "." + tmpsrc[1];

			//tmpsrc = src.split(imgBtnDel);
			//src = tmpsrc[0] + imgBanDel + tmpsrc[1];
			ban.src = "wr-images/opening_mainbanner.jpg";
		}

	}
}

function preloadImages() 
{
	new Image().src = "wr-images/btn-cust2.jpg";
	new Image().src = "wr-images/btn-data2.jpg";
	new Image().src = "wr-images/btn-market2.jpg";
	new Image().src = "wr-images/btn-prod2.jpg";
	new Image().src = "wr-images/btn-sup2.jpg";
	new Image().src = "wr-images/btn-ware2.jpg";
	new Image().src = "wr-images/btn-web2.jpg";
	new Image().src = "wr-images/ban-cust.jpg";
	new Image().src = "wr-images/ban-data.jpg";
	new Image().src = "wr-images/ban-market.jpg";
	new Image().src = "wr-images/ban-prod.jpg";
	new Image().src = "wr-images/ban-sup.jpg";
	new Image().src = "wr-images/ban-ware.jpg";
	new Image().src = "wr-images/ban-web.jpg";	
}