var pics = new Array("images/candlea.jpg","images/dudea.jpg", "images/meda.jpg", "images/marcha.jpg");
var index = 0;
var dimages = new Array();
for (i=0; i<pics.length; i++)
{
  dimages[i] = new Image();
  dimages[i].src = pics[i];
}
setTimeout("changepic()", 800);
function changepic()
{
  if (index < pics.length-1)
    index++;
  else
    index = 0;
  var target=0;
      if (document.images.slideshow)
        target=document.images.slideshow;
      if (document.all && document.getElementById("slideshow"))
        target=document.getElementById("slideshow");
  
      // make sure target is valid.  It might not be valid
      //   if the page has not finished loading
      if (target)
        target.src = pics[index];
      
  setTimeout("changepic()", 800);
}