var imagenumber = 4 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "flash/banner_time.swf"
images[2] = "flash/banner_triangle.swf"
images[3] = "flash/banner_sticks.swf"
images[4] = "flash/banner_digites.swf"

var image = images[rand1]
 

// JavaScript Document