function swapImage (img, imageName)
{
	if(document.images)
		img.src = imageName;
}

var rollover_Preloaded = new Array();

function preloadImages(imgs)
{
	for (key in imgs) {
		rollover_Preloaded[key] = document.createElement('img');
        rollover_Preloaded[key].setAttribute('src',imgs[key]);
	}		
}