var imagenumber = 12 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "subPhoto1.jpg"
images[2] = "subPhoto2.jpg"
images[3] = "subPhoto3.jpg"
images[4] = "subPhoto4.jpg"
images[5] = "subPhoto5.jpg"
images[6] = "subPhoto6.jpg"
images[7] = "subPhoto7.jpg"
images[8] = "subPhoto8.jpg"
images[9] = "subPhoto9.jpg"
images[10] = "subPhoto10.jpg"
images[11] = "subPhoto11.jpg"
images[12] = "subPhoto12.jpg"
var image = images[rand1]

var imagenumber = 12 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "mainPhoto1.jpg"
images[2] = "mainPhoto2.jpg"
images[3] = "mainPhoto3.jpg"
images[4] = "mainPhoto4.jpg"
images[5] = "mainPhoto5.jpg"
images[6] = "mainPhoto6.jpg"
images[7] = "mainPhoto7.jpg"
images[8] = "mainPhoto8.jpg"
images[9] = "mainPhoto9.jpg"
images[10] = "mainPhoto10.jpg"
images[11] = "mainPhoto11.jpg"
images[12] = "mainPhoto12.jpg"
var mimage = images[rand1]