var imagenumber = 8 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "images/toppbilde1.jpg"
images[2] = "images/toppbilde2.jpg"
images[3] = "images/toppbilde3.jpg"
images[4] = "images/toppbilde4.jpg"
images[5] = "images/toppbilde5.jpg"
images[6] = "images/toppbilde6.jpg"
images[7] = "images/toppbilde7.jpg"
images[8] = "images/toppbilde8.jpg"


var image = images[rand1]