var pt_imagenumber = 20 ;
var pt_randomnumber = Math.random() ;
var pt_rand = Math.round( (pt_imagenumber-1) * pt_randomnumber) + 1 ;
pt_images = new Array
pt_images[1] = "tickets/pt_tix001.jpg"
pt_images[2] = "tickets/pt_tix002.jpg"
pt_images[3] = "tickets/pt_tix003.jpg"
pt_images[4] = "tickets/pt_tix004.jpg"
pt_images[5] = "tickets/pt_tix005.jpg"
pt_images[6] = "tickets/pt_tix006.jpg"
pt_images[7] = "tickets/pt_tix007.jpg"
pt_images[8] = "tickets/pt_tix008.jpg"
pt_images[9] = "tickets/pt_tix009.jpg"
pt_images[10] = "tickets/pt_tix010.jpg"
pt_images[11] = "tickets/pt_tix011.jpg"
pt_images[12] = "tickets/pt_tix012.jpg"
pt_images[13] = "tickets/pt_tix013.jpg"
pt_images[14] = "tickets/pt_tix014.jpg"
pt_images[15] = "tickets/pt_tix015.jpg"
pt_images[16] = "tickets/pt_tix016.jpg"
pt_images[17] = "tickets/pt_tix017.jpg"
pt_images[18] = "tickets/pt_tix018.jpg"
pt_images[19] = "tickets/pt_tix019.jpg"
pt_images[20] = "tickets/pt_tix020.jpg"

var pt_tix = pt_images[pt_rand]