function pickRandom(range) {
	if (Math.random)
		return Math.round(Math.random() * (range-1));
	else {
		var now = new Date();
		return (now.getTime() / 1000) % range;
	}
}

function homeImage() {
var imgs = new Array
		(
			"hp_pic1.jpg", "hp_pic2.jpg", "hp_pic3.jpg", "hp_pic4.jpg"
		);

	var ic = imgs.length; // Number of alternative images
	var choice = pickRandom(ic);
	newImage = "url(/images/" + imgs[choice] + ")";

	if (document.getElementById) {
		document.getElementById('wrapper').style.backgroundImage = newImage;
		}
		
	else if (document.all) {
		document.all('wrapper').style.backgroundImage = newImage;
		}

	else if (document.layers) {
		document.layers('wrapper').style.backgroundImage = newImage;
	}
}

function loadImage(){
	var imgs = new Array
		(
			"margin1.jpg", "margin2.jpg", "margin3.jpg", "margin4.jpg", "margin5.jpg", "margin6.jpg", "margin7.jpg", "margin8.jpg"
		);

	var ic = imgs.length; // Number of alternative images
	var choice = pickRandom(ic);
	newImage = "url(/images/" + imgs[choice] + ")";

	if (document.getElementById) {
		document.getElementById('wrapper').style.backgroundImage = newImage;
		}
		
	else if (document.all) {
		document.all('wrapper').style.backgroundImage = newImage;
		}

	else if (document.layers) {
		document.layers('wrapper').style.backgroundImage = newImage;
	}
}