// JavaScript Document

var fypPics;
var tsPics;
var gsPics;
var pvPics;

function initPics() {
	fypPics = ['fypStart','fyp','fyp2','fyp3','fyp4','fyp5','fyp6'];
	tsPics = ['tsStart','ts'];
	gsPics = ['gsStart','gs','gs2','gs3','gs4'];
	pvPics = ['pvStart','pv','pv2','pv3','pv4'];
}

function randomPics() {
	initPics();
	var rand;
	rand=Math.floor(Math.random()*(fypPics.length-1));
	var fyp = document.getElementById(fypPics[0]);
	fyp.setAttribute('id',fypPics[rand+1]);
	
	rand=Math.floor(Math.random()*(tsPics.length-1));
	var ts = document.getElementById(tsPics[0]);
	ts.setAttribute('id',tsPics[rand+1]);
	
	rand=Math.floor(Math.random()*(gsPics.length-1));
	var gs = document.getElementById(gsPics[0]);
	gs.setAttribute('id',gsPics[rand+1]);
	
	rand=Math.floor(Math.random()*(pvPics.length-1));
	var pv = document.getElementById(pvPics[0]);
	pv.setAttribute('id',pvPics[rand+1]);
}