function hidediv(id) {
	//safe function to hide an element with a specified id
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'none';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'none';
		}
		else { // IE 4
			document.all.id.style.display = 'none';
		}
	}
}

function showdiv(id) {
	//safe function to show an element with a specified id
	if (document.getElementById) { // DOM3 = IE5, NS6
		document.getElementById(id).style.display = 'block';
	}
	else {
		if (document.layers) { // Netscape 4
			document.id.display = 'block';
		}
		else { // IE 4
			document.all.id.style.display = 'block';
		}
	}
}

function hidevisibility(id) {
	//safe function to hide an element with a specified id
	try {
		if (document.getElementById) { // DOM3 = IE5, NS6
			document.getElementById(id).style.visibility = "hidden";
		}
		else {
			if (document.layers) { // Netscape 4
				document.id.visibility = "hidden";
			}
			else { // IE 4
				document.all.id.style.visibility = "hidden";
			}
		}
	}
	catch (e) {
		
	}
}

function showvisibility(id) {
	//safe function to show an element with a specified id
	try {
		if (document.getElementById) { // DOM3 = IE5, NS6
			document.getElementById(id).style.visibility = "visible";
		}
		else {
			if (document.layers) { // Netscape 4
				document.id.visibility = "visible";
			}
			else { // IE 4
				document.all.id.style.visibility = "visible";
			}
		}
	}
	catch (e) {
		
	}
}