function show(id) {

	if (document.getElementById) {

		document.getElementById(id).style.visibility='visible';

	} 

	else if (document.all) {

		document.all[id].style.visibility='visible';

	} 

	else if (document.layers) {

		document.layers[id].display='block';

	}

}

function hide(id) {

	if (document.getElementById) {

		document.getElementById(id).style.visibility='hidden';

	} 

	else if (document.all) {

		document.all[id].style.visibility='hidden';    

	}

	else if (document.layers) {

		document.layers[id].display='none';

	}

}