var to;
var rotuj = 0;
var jsimages = new Array();
function rotace() {
  var obj, obj2;
  to = window.clearTimeout();
//random_num = (Math.round(Math.random()*10)%4)+1;
  random_num = rotuj + 1;
  if (random_num > 4) random_num = 1;
    obj = document.getElementById('jsimage'+random_num);
  if (obj && obj.complete) {
   obj2 = document.getElementById('headhome');
  if (obj2 && jsimages[random_num]) {
   obj2.style.background = "url("+jsimages[random_num]+") 0 100% no-repeat";
  }
  rotuj = random_num;
 }
 to = window.setTimeout("rotace()", 10000);
}