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

function loadImage(x) {
	var banners;
	switch (x) {
	case "all":
		banners = new Array ('birch-trees.jpg',
							 'bridge-at-night.jpg',
							 'coastline.jpg',
							 'freight-train.jpg',
							 'house-clouds.jpg', 
							 'houses.jpg',
							 'ice-crystals.jpg',
							 'kayak.jpg',
							 'logging-truck.jpg',
							 'red-bricks.jpg',
							 'rural-landscape.jpg',
							 'sandhills.jpg',
							 'sky.jpg', 
							 'trees-at-night.jpg',
							 'walking-on-beach.jpg');
		break;
	case "home":
		banners = new Array ('sky.jpg',
							 'walking-on-beach.jpg',
							 'sandhills.jpg');
		break;
	case "EO":
		banners = new Array ('sky.jpg',
							 'sandhills.jpg');
		break;
	case "ITH":
		banners = new Array ('house-clouds.jpg',
							 'rural-landscape.jpg',
							 'houses.jpg');
		break;
	case "OTR":
		banners = new Array ('freight-train.jpg',
							 'bridge-at-night.jpg',
							 'logging-truck.jpg');
		break;
	case "CU":
		banners = new Array ('ice-crystals.jpg');
		break;
	case "ME":
		banners = new Array ('trees-at-night.jpg');
		break;
	case "SS":
		banners = new Array ('coastline.jpg');
		break;
	case "FYB":
		banners = new Array ('red-bricks.jpg',
							 'houses.jpg');
		break;
	default:
		banners = new Array ('sky.jpg');
		break;
	}
	var ic = banners.length; // Number of alternative images
	var choice = pickRandom(ic);
	newImage = "url('/images/banners/" + banners[choice] + "')";
	
	if (document.getElementById) {
		document.getElementById('heading').style.backgroundImage = newImage;
	}
	else if (document.all) {
		document.all('heading').style.backgroundImage = newImage;
	}
	else if (document.layers) {
		document.layers('heading').style.backgroundImage = newImage;
	}
}
	//today = new Date();
	//i=today.getSeconds();
	//n=banners.length;
	//var choice = randomSort(ic);

	//function randomSort( a, b )
	//{
	//	return Math.random() - 0.4;
	//}
	
	//document.getElementById('heading').style.backgroundImage = url(banners[i-Math.round((i-1)/n)*n]);
//document.getElementById('heading').style.background = "white";