function aktualizujOdkazy2() {
 if (!document.getElementsByTagName) return false;
 var links = document.getElementsByTagName ("a");
 for (var i=0; i < links.length; i++) {
  if (links[i].className.match("foto")) {
   links[i].onclick = function() {
    return !window.open(this.href,'nahled','toolbar=0,location=0,scrollbars=0,width=766,height=537,resizable=1,top=0,left=0');
   }
  }
 }
}

window.onload = aktualizujOdkazy2;