var imgName;
var bName = navigator.appName;
var bVer = parseInt(navigator.appVersion);
var NS4 = (bName == "Netscape" && bVer >= 4);
var IE4 = (bName == "Microsoft Internet Explorer" && bVer >= 4);
var NS3 = (bName == "Netscape" && bVer < 4);
var IE3 = (bName == "Microsoft Internet Explorer" && bVer < 4);
if (NS3 || NS4 || IE4) {
	var bildAn = new Array("/images/menu/start-over.gif",
			"/images/menu/arbeit-over.gif", "/images/menu/kanzlei-over.gif",
			"/images/menu/impressum-over.gif", "/images/menu/kontakt-over.gif");
	var bildAus = new Array("/images/menu/start.gif", "/images/menu/arbeit.gif",
			"/images/menu/kanzlei.gif", "/images/menu/impressum.gif",
			"/images/menu/kontakt.gif");
	var bildDruck = new Array("/images/menu/start-down.gif",
			"/images/menu/arbeit-down.gif", "/images/menu/kanzlei-down.gif",
			"/images/menu/impressum-down.gif", "/images/menu/kontakt-down.gif");
	var numb, i = 1;
	for (numb = 0; numb <= 5; numb++) {
		eval("bild" + i + "An=new Image()");
		eval("bild" + i + "An.src=bildAn[numb]");
		eval("bild" + i + "Aus=new Image()");
		eval("bild" + i + "Aus.src=bildAus[numb]");
		eval("bild" + i + "Druck=new Image()");
		eval("bild" + i + "Druck.src=bildDruck[numb]");
		i++;
	}
}

function ButtonAn(imgName) {
	if (NS3 || NS4 || IE4) {
		imgAn = eval(imgName + "An.src");
		document[imgName].src = imgAn;

	}
}

function ButtonAus(imgName) {
	if (NS3 || NS4 || IE4) {
		imgAus = eval(imgName + "Aus.src");
		document[imgName].src = imgAus;
	}
}

function ButtonDruck(imgName) {
	if (NS3 || NS4 || IE4) {
		imgDruck = eval(imgName + "Druck.src");
		document[imgName].src = imgDruck;

	}
}