function animate_header ()
		{var hcp = parseInt(hc.style.backgroundPosition) + 3; var hfp = parseInt(hf.style.backgroundPosition) + 0;
			if(hcp <= -894){hcp = 0;}
			if(hfp >= 894){hfp = 300;}
		hc.style.backgroundPosition = hcp + 'px 0px'; hf.style.backgroundPosition = '50% 0%';}