document.getElementById('cache').style.visibility='hidden';
/*
	if (document.getElementById){
		document.getElementById('cache').style.visibility='hidden';
	}else{
		if (document.layers){ //NS4
		    document.getElementById('cache').style.visibility='hidden';
			//document.prepage.visibility = 'hidden';
		}
		else { //IE4
			document.all.cache.style.visibility = 'hidden';
		}
	}
*/