slideshow=new Array();
currslide=new Array();

function startSlideShow(id,delay,initial) {
  currslide[id]=0;
  setTimeout('nextSlide('+id+','+delay+')',initial);
}

function nextSlide(id,delay) {
  var elm;

  elm=document.getElementById(slideshow[id][currslide[id]]);
  if(elm!=null) elm.style.display='none';

  currslide[id]++;
  if(currslide[id]>=slideshow[id].length) currslide[id]=0;
  
  elm=document.getElementById(slideshow[id][currslide[id]]);
  if(elm!=null) elm.style.display='block';

  setTimeout('nextSlide('+id+','+delay+')',delay);
}