<!-- Hide this script from old browsers --
var imagenumber = 4 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array

images[1] = "images/sub_rotpic1.gif"
images[2] = "images/sub_rotpic2.gif"
images[3] = "images/sub_rotpic3.gif"
images[4] = "images/sub_rotpic4.gif"

var image = images[rand1]

document.write('<IMG SRC="' + image + '"border="0" width="390" height="36" alt="">')
// -- End Hiding Here -->