var imagenumber = 3 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "<img src=\"images/random/home_image_1.gif\" border=0>"
images[2] = "<img src=\"images/random/home_image_3.gif\" border=0>"
images[3] = "<img src=\"images/random/home_image_4.gif\" border=0>"
var image = images[rand1]