if (navigator.appVersion.indexOf("2.") != -1)
	{
	check = false;
	}

if ((navigator.appVersion.indexOf("3.") != -1) && (navigator.appName.indexOf("Explorer") != -1))
	{
	check = false;
	}

else
	{
	check = true;
	}

if (check == true)
	{

	b1 = new Image();
	b1.src = "images/but_konzept_off.gif";
	b1over = new Image();
	b1over.src = "images/but_konzept_over.gif";
	b1stay = new Image();
	b1stay.src = "images/but_konzept_on.gif";
	b1out = new Image(); 
	b1out.src = "images/but_konzept_off.gif";

	b2 = new Image();
	b2.src = "images/but_vorteile_off.gif";
	b2over = new Image();
	b2over.src = "images/but_vorteile_over.gif";
	b2stay = new Image();
	b2stay.src = "images/but_vorteile_on.gif";
	b2out = new Image(); 
	b2out.src = "images/but_vorteile_off.gif";

	b3 = new Image();
	b3.src = "images/but_referenzen_off.gif";
	b3over = new Image();
	b3over.src = "images/but_referenzen_over.gif";
	b3stay = new Image();
	b3stay.src = "images/but_referenzen_on.gif";
	b3out = new Image(); 
	b3out.src = "images/but_referenzen_off.gif";

	b4 = new Image();
	b4.src = "images/but_kontakt_off.gif";
	b4over = new Image();
	b4over.src = "images/but_kontakt_over.gif";
	b4stay = new Image();
	b4stay.src = "images/but_kontakt_on.gif";
	b4out = new Image(); 
	b4out.src = "images/but_kontakt_off.gif";

	}

imageStay = ""

function imageover(name)
	{
	if (imageStay != name)
		{
		document[name].src = eval(name + "over.src");
		}
	}

function imageout(name)
	{
	if (imageStay != name)
		{
		document[name].src = eval(name + ".src");
		}
	}

function over(name)
	{
	if (check == true)
		{
		imageover(name);
		}
	}

function out(name)
	{
	if (check == true)
		{
		imageout(name);
		}
	}

function stay(name)
	{
	if (check == true)
		{
		document[name].src = eval(name + "stay.src");
		if (imageStay != name)
			{
			if (imageStay != "")
				{
				document[imageStay].src = eval(imageStay + ".src");
				}
			}
			imageStay = name
		}
	}