function random_imglink(){
var myimages=new Array()
//specify random images below. You can have as many as you wish
myimages[1]="images/index_02a.png"
myimages[2]="images/index_02b.png"
myimages[3]="images/index_02c.png"
myimages[4]="images/index_02d.png"
myimages[5]="images/index_02e.png"
myimages[6]="images/index_02f.png"

var ry=Math.floor(Math.random()*myimages.length)
if (ry==0)
ry=1
document.write('<img src="'+myimages[ry]+'" width="800" height="82" alt="" />')
}
random_imglink()