// JavaScript Document
var numImg = 173;
var a;
var b;
var c;
var d;
function img(){
	a = parseInt(Math.random()*numImg) + 1;
	b = parseInt(Math.random()*numImg) + 1;
	c = parseInt(Math.random()*numImg) + 1;
	d = parseInt(Math.random()*numImg) + 1;
}
img();