var imagenumber = 19 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "pix/random/01.jpg"
images[2] = "pix/random/02.jpg"
images[3] = "pix/random/03.jpg"
images[4] = "pix/random/04.jpg"
images[5] = "pix/random/09.jpg"
images[6] = "pix/random/10.jpg"
images[7] = "pix/random/11.jpg"
images[8] = "pix/random/12.jpg"
images[9] = "pix/random/13.jpg"
images[10] = "pix/random/14.jpg"
images[11] = "pix/random/15.jpg"
images[12] = "pix/random/16.jpg"
images[13] = "pix/random/17.jpg"
images[14] = "pix/random/18.jpg"
images[15] = "pix/random/20.jpg"
images[16] = "pix/random/21.jpg"
images[17] = "pix/random/22.jpg"
images[18] = "pix/random/23.jpg"
images[19] = "pix/random/24.jpg"

var image = images[rand1]