<script language="JavaScript">

function pickimg(){
var imagenumber = 2 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1;
images = new Array

images[1] = "IMAGE #1"
images[2] = "IMAGE #2"

var image = images[rand1]
document.randimg.src = image
}
</script>