rnd.today=new Date();
rnd.seed=rnd.today.getTime();
function rnd() {
rnd.seed = (rnd.seed*9301+49297) % 233280;
return rnd.seed/(233280.0); };
function rand(number) {
return Math.ceil(rnd()*number); };

document.write('<style>BODY { background: #FFFFFF url\(\'images/background' + rand(3) + '.jpg\'\) right bottom no-repeat; color: #000000; margin: 0px; }</style>')