<!-- hide from old browsers




	function RollOn(layerID){
		
		eval('document.getElementById("'+layerID+'").style.visibility="visible"');
	}



	function RollOff(layerID){

		eval('document.getElementById("'+layerID+'").style.visibility="hidden"');
	}

	function schOff(){
		var layerID = 'schshow';
		eval('document.getElementById("'+layerID+'").style.visibility="hidden"');
	}

// end hiding from old browsers -->