// ===========================
// Layer functions
// ===========================
//
// showlayer(layername)
// hidelayer(layername)

// show a named layer
// need to account for browser differences
function showlayer(layername) {
	mybrowser = getbrowsername();
	mybrowserversion = getbrowserversion();
	if (mybrowser == "Netscape") {
		if (mybrowserversion < 5) {
			document.layers[layername].visibility="visible";		
		} else {
			document.getElementById(layername).style.visibility="visible";
		}
	} else {
		document.all[layername].style.visibility="visible";
	}
}

// hide a named layer
// need to account for browser differences	
function hidelayer(layername) {
	mybrowser = getbrowsername();
	mybrowserversion = getbrowserversion();
	if (mybrowser == "Netscape") {
		if (mybrowserversion < 5) {
			document.layers[layername].visibility="hidden";		
		} else {
			document.getElementById(layername).style.visibility="hidden";
		}
	} else {
		document.all[layername].style.visibility="hidden";
	}
}

function donothing () {

}