var imagenumber = 17 ;
var randomnumber = Math.random() ;
var rand1 = Math.round( (imagenumber-1) * randomnumber) + 1 ;
images = new Array
images[1] = "../webdev/image/photos/y1.jpg"
images[2] = "../webdev/image/photos/y2.jpg"
images[3] = "../webdev/image/photos/y3.jpg"
images[4] = "../webdev/image/photos/y4.jpg"
images[5] = "../webdev/image/photos/y5.jpg"
images[6] = "../webdev/image/photos/y6.jpg"
images[7] = "../webdev/image/photos/y7.jpg"
images[8] = "../webdev/image/photos/y8.jpg"
images[9] = "../webdev/image/photos/y9.jpg"
images[10] = "../webdev/image/photos/y10.jpg"
images[11] = "../webdev/image/photos/y11.jpg"
images[12] = "../webdev/image/photos/y12.jpg"
images[13] = "../webdev/image/photos/y13.jpg"
images[14] = "../webdev/image/photos/y14.jpg"
images[15] = "../webdev/image/photos/y15.jpg"
images[16] = "../webdev/image/photos/y16.jpg"
images[17] = "../webdev/image/photos/y17.jpg"
var image = images[rand1]
document.write('<IMG SRC="' + image + '">')