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) {
  if (getAppVersion()) {
    document[imgname].src = img[num].src;
   }
}
imgsrc = new Array();

imgsrc[1] = "img/menu-cz/m01.gif";
imgsrc[2] = "img/menu-cz/m01b.gif";
imgsrc[3] = "img/menu-cz/m02.gif";
imgsrc[4] = "img/menu-cz/m02b.gif";
imgsrc[5] = "img/menu-cz/m03.gif";
imgsrc[6] = "img/menu-cz/m03b.gif";
imgsrc[7] = "img/menu-cz/m04.gif";
imgsrc[8] = "img/menu-cz/m04b.gif";
imgsrc[9] = "img/menu-cz/m05.gif";
imgsrc[10] = "img/menu-cz/m05b.gif";
imgsrc[11] = "img/menu-cz/m06.gif";
imgsrc[12] = "img/menu-cz/m06b.gif";



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


function zvetsit(unid){
    window.open('img-detail.php?img='+unid ,'detail','scrollbars=no,resizable=no,toolbar=no,status=no,width=800,height=600');
}