function switchImages()
{
	if (document.images && (preloaded == true)) 
	{
		for (var i = 0; i < switchImages.arguments.length; i += 2) 
		{
			document.getElementById(switchImages.arguments[i]).src = switchImages.arguments[i+1];
		}
	}
}

function loadImage(url)
{
	if (document.images) 
	{
		result = new Image();
		result.src = url;
		return result;
	}
}

var preloaded = false;
function preloadImages() 
{
	if (document.images) 
	{
		overImages = new Array;
		for (var i = 0; i < preloadImages.arguments.length; i++)
		{
			overImages[i] = loadImage(preloadImages.arguments[i]);
		}
		preloaded = true;
	}
}