var slidespeed=2000

var slideimages=new Array("images/promo_1.jpg","images/promo_2.jpg","images/promo_3.jpg","images/promo_4.jpg")

var imageholder=new Array()
var ie=document.all
for (i=0;i<slideimages.length;i++){
imageholder[i]=new Image()
imageholder[i].src=slideimages[i]
}