function getAppVersion() {
	appname= navigator.appName;
	appversion = navigator.appVersion;
	majorver = appversion.substring(0, 1);
	if((appname == "Netscape") && ( majorver >= 3 ) ) return 1;
	if((appname == "Microsoft Internet Explorer") && (majorver >= 4) ) return 1;
	if((appname == "Opera") && (majorver >=1))return 1;
	return 0;
}
function swtch(num, imgname) {
	if (getAppVersion()){
		document[imgname].src = img[num].src;
	}
}
imgsrc = new Array();
imgsrc = new Array();
imgsrc[0] = "pic/Button/Kontakt-left.gif";
imgsrc[1] = "pic/Button/Kontakt-right.gif";
imgsrc[2] = "pic/Button/Arr-left.gif";
imgsrc[3] = "pic/Button/Arr-right.gif";
imgsrc[4] = "pic/Button/Partner-left.gif";
imgsrc[5] = "pic/Button/Partner-right.gif";
imgsrc[6] = "pic/Button/Bilder-left.gif";
imgsrc[7] = "pic/Button/Bilder-right.gif";
imgsrc[8] = "pic/Button/Start-left.gif";
imgsrc[9] = "pic/Button/Start-right.gif";

if (getAppVersion()) {
	img = new Array();
	for (i = 0; i < imgsrc.length; i++) {
		img[i] = new Image();
		img[i].src = imgsrc[i];
	}
}