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 >= 7) ) return 1;
return 0;
}
function swtch(num, imgname) {
if (getAppVersion()) {
document[imgname].src = img[num].src;
}
}
imgsrc = new Array();

imgsrc[1] = "/img/content/overview-webdesign.jpg";
imgsrc[2] = "/img/content/overview-webdesign-gray.jpg";
imgsrc[3] = "/img/content/overview-eshop.jpg";
imgsrc[4] = "/img/content/overview-eshop-gray.jpg";
imgsrc[5] = "/img/content/overview-hosting.jpg";
imgsrc[6] = "/img/content/overview-hosting-gray.jpg";
imgsrc[7] = "/img/content/overview-domains.jpg";
imgsrc[8] = "/img/content/overview-domains-gray.jpg";
imgsrc[9] = "/img/content/overview-seo.jpg";
imgsrc[10] = "/img/content/overview-seo-gray.jpg";
imgsrc[11] = "/img/content/overview-corpid.jpg";
imgsrc[12] = "/img/content/overview-corpid-gray.jpg";
imgsrc[13] = "/img/hosting/hosting-basic-a.jpg";
imgsrc[14] = "/img/hosting/hosting-standard-a.jpg";
imgsrc[15] = "/img/hosting/hosting-profi-a.jpg";
imgsrc[16] = "/img/hosting/hosting-basic.jpg";
imgsrc[17] = "/img/hosting/hosting-standard.jpg";
imgsrc[18] = "/img/hosting/hosting-profi.jpg";
imgsrc[19] = "/img/hosting/hosting-e-mail.jpg";
imgsrc[20] = "/img/hosting/hosting-e-mail-a.jpg";
imgsrc[21] = "/img/hosting/hbasic.jpg";
imgsrc[22] = "/img/hosting/hbasic_.jpg";
imgsrc[23] = "/img/hosting/hstandard.jpg";
imgsrc[24] = "/img/hosting/hstandard_.jpg";
imgsrc[25] = "/img/hosting/hprofi.jpg";
imgsrc[26] = "/img/hosting/hprofi_.jpg";
imgsrc[27] = "/img/hosting/hemail.jpg";
imgsrc[28] = "/img/hosting/hemail_.jpg";
imgsrc[33] = "/img/hosting/hosting-basic-en-a.jpg";
imgsrc[34] = "/img/hosting/hosting-standard-en-a.jpg";
imgsrc[35] = "/img/hosting/hosting-profi-en-a.jpg";
imgsrc[36] = "/img/hosting/hosting-basic-en.jpg";
imgsrc[37] = "/img/hosting/hosting-standard-en.jpg";
imgsrc[38] = "/img/hosting/hosting-profi-en.jpg";
imgsrc[39] = "/img/hosting/hosting-e-mail-en.jpg";
imgsrc[40] = "/img/hosting/hosting-e-mail-en-a.jpg";
imgsrc[50] = "http://www.microdesign.cz/img/services/helpdesk.jpg";
imgsrc[51] = "http://www.microdesign.cz/img/services/helpdesk1.jpg";
imgsrc[52] = "http://www.microdesign.cz/img/services/webmail.jpg";
imgsrc[53] = "http://www.microdesign.cz/img/services/webmail1.jpg";
imgsrc[54] = "http://www.microdesign.cz/img/services/portal.jpg";
imgsrc[55] = "http://www.microdesign.cz/img/services/portal1.jpg";
imgsrc[56] = "http://www.microdesign.cz/img/services/eshop.jpg";
imgsrc[57] = "http://www.microdesign.cz/img/services/eshop1.jpg";

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