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;
  return 0;
}

function swtch(num, imgname, layername) {
  if (getAppVersion()) {
 	if(document.layers)
		{
			if (layername)
				{ document.layers[layername].document.images[imgname].src = img[num].src; }
			else

				{ document[imgname].src = img[num].src; }	
		}
	else
		{ document[imgname].src = img[num].src; }
  	}
}

imgsrc = new Array();
imgsrc[0] = "img/nav_webhosting.gif";
imgsrc[1] = "img/nav_webhosting_mo.gif";
imgsrc[2] = "img/nav_webdesign.gif";
imgsrc[3] = "img/nav_webdesign_mo.gif";
imgsrc[4] = "img/nav_netzwerk.gif";
imgsrc[5] = "img/nav_netzwerk_mo.gif";
imgsrc[6] = "img/nav_edv.gif";
imgsrc[7] = "img/nav_edv_mo.gif";

imgsrc[8] = "img/navischrift_webhosting.gif";
imgsrc[9] = "img/navischrift_webdesign.gif";
imgsrc[10] = "img/navischrift_netzwerk.gif";
imgsrc[11] = "img/navischrift_edv.gif";
imgsrc[12] = "img/leer.gif";
imgsrc[13] = "img/kontakt.gif";
imgsrc[14] = "img/kontakt_mo.gif";

imgsrc[15] = "img/nav_hardware.gif";
imgsrc[16] = "img/nav_hardware_mo.gif";
imgsrc[17] = "img/nav_schulungen.gif";
imgsrc[18] = "img/nav_schulungen_mo.gif";

imgsrc[19] = "img/navischrift_hardware.gif";
imgsrc[20] = "img/navischrift_schulungen.gif";

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

function resizefixer()
	{ if (document.layers) {self.location.reload();} }