<!-- Hide from old browsers

var imagenumber = 5 ;

var randomnumber = Math.random() ;

var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;

images = new Array

images[1] = "images/header1.jpg"

images[2] = "images/header2.jpg"

images[3] = "images/header3.jpg"

images[4] = "images/header4.jpg"

images[5] = "images/header5.jpg"

var image = images[rand1]
// -- End Hiding Here -->
document.write('<IMG SRC="' + image + '"border="0" usemap="#Map">')