<!-- 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/frontpg/img/pic_3.jpg"
images[2] = "images/frontpg/img/pic_2.jpg"
images[3] = "images/frontpg/img/pic_3.jpg"
images[4] = "images/frontpg/img/pic_4.jpg"

var image = images[rand1]
// -- End Hiding Here -->
<!-- Hide this script from old browsers --
var imagenumber = 5 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "images/frontpg/img/pic_a.jpg"
images[2] = "images/frontpg/img/pic_b.jpg"
images[3] = "images/frontpg/img/pic_a.jpg"
images[4] = "images/frontpg/img/pic_d.jpg"
images[5] = "images/frontpg/img/pic_e.jpg"

var imageZ = images[rand1]
// -- End Hiding Here -->