<!-- Hide from old browsers

var imagenumber = 4 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "pictures/main_image_02.gif"
images[2] = "pictures/main_image_02a.gif"
images[3] = "pictures/main_image_02b.gif"
images[4] = "pictures/main_image_02c.gif"
var image = images[rand1]
// -- End Hiding Here -->