// delay in milliseconds between image swaps 1000 = 1 second
var delay = 5000;
var counter = 0;
var imgs_rotation = new Array("");

function preloadImgs(){
  for(var i=0;i<imgs_rotation.length;i++){
    MM_preloadImages(imgs_rotation[i]);
  }
}

function randomImages(){
  if(counter == (imgs_rotation.length)){
    counter = 0;
  }
  MM_swapImage('rotator', '', imgs_rotation[counter++]);
  setTimeout('randomImages()', delay);
}