function swapImage(imgN,imgU)
{
	if(document.images) document.images[imgN].src = imgU;
}

function preLoad()
{
	if(document.images)
	{
		preload = new Image(98,80);
		preload.src = "images/but_home_h.gif";
		preload.src = "images/but_services_h.gif";
		preload.src = "images/but_grooming_h.gif";
		preload.src = "images/but_boarding_h.gif";
		preload.src = "images/but_tour_h.gif";
		preload.src = "images/but_drshields_h.gif";
		preload.src = "images/but_staff_h.gif";
	}
}