function initRolloverImages()
{
	if (!document.getElementById) {
		return;
	}

	if (!document.rolloverImages) {
		document.rolloverImages = new Array();
	}

	var args = initRolloverImages.arguments;
	var i;

	for (i = 0; i < args.length; i += 2) {
		document.rolloverImages[args[i]] = new Image();
		document.rolloverImages[args[i]].src = args[i + 1];
	}
}

function swapRolloverImages(id)
{
	if (!document.getElementById) {
		return;
	}
	var img = document.rolloverImages[id];
	var elem = document.getElementById(id);
	if (!elem || !img) {
		return;
	}
	var src = img.src;
	img.src = elem.src;
	elem.src = src;
}