function random_imglink(){
var myimages=new Array()
//specify random images below. You can have as many as you wish
myimages[1]="./images/banner1.jpg"
myimages[2]="./images/banner2.jpg"
myimages[3]="./images/banner3.jpg"
myimages[4]="./images/banner4.jpg"

var ry=Math.floor(Math.random()*myimages.length)
if (ry==0)
ry=1
document.write('<img src="'+myimages[ry]+'" border=0>')
}
random_imglink()