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);
};

num = rand(4);
if (num==2)	{
	bgImage = 'bg-man-04.jpg';
	}
else if (num==3)	{
	bgImage = 'bg-man-07.jpg';
	}
else if (num==4)	{
	bgImage = 'bg-man-08.jpg';
	}
else	{
	bgImage = 'bg-woman-02.jpg';
	}
document.getElementById('content01').style.background = "#fff url(images/" + bgImage + ") top right no-repeat";