function MM_changemedia()
{
  var d=document; 
  if (d.getElementById('torts'))
  {
    r_src="img/corn"+(Math.floor(6*Math.random()+1))+".gif";
    while (r_src==d.getElementById('torts').src)
    {
      r_src="img/corn"+(Math.floor(6*Math.random()+1))+".gif";
    }
    d.getElementById('torts').src=r_src;
  }
}
function MM_preload()
{
  var d=document; 
  if(!d.MM_p) d.MM_p=new Array();

  for(i=1; i<=6; i++)
  {
    d.MM_p[i]=new Image; 
    d.MM_p[i++].src="img/corn"+i+".gif";
  }
  setInterval(MM_changemedia,5000);
}