oldLayerName = ""
layerRef = ""
oldButtonName = ""
styleRef = ""

var ns6 = (document.getElementById && !document.all) ? true : false;
var menuReady = false;

if (navigator.appName == "Netscape"){
	layerRef = ".layers"
	styleRef = ""
}
else {
	layerRef = ".all"
	styleRef = ".style"
}

function revealMenu(layerName) {
	if (menuReady == true){
		if (!ns6) {
			if (oldLayerName){ eval("document" + layerRef + "[oldLayerName]" + styleRef + ".visibility = 'hidden'"); }
	
			eval("document" + layerRef + "['MouseCatcher']" + styleRef + ".visibility = 'visible'")
			eval("document" + layerRef + "[layerName]" + styleRef + ".visibility = 'visible'");	
		
			oldLayerName = layerName
		}
		
		if (ns6) {
			
			if (layerName == 'office_rollover') {
				lay = 'physician';
				document.getElementById([lay]).style.display = "none";
			}
			if (layerName == 'physician') {
				lay = 'office_rollover';
				document.getElementById([lay]).style.display = "none";
			}
			document.getElementById([layerName]).style.display = "block";
		}
	}
}

function removeMenu(lay){
	if (menuReady == true){
		if (!ns6) {
			if (oldLayerName){ eval("document" + layerRef + "[oldLayerName]" + styleRef + ".visibility = 'hidden'"); }	
			eval("document" + layerRef + "['MouseCatcher']" + styleRef + ".visibility = 'hidden'")
		}
		
		if (ns6) {
			lay = 'office_rollover';
			document.getElementById([lay]).style.display = "none";
			lay = 'physician';
			document.getElementById([lay]).style.display = "none";
		}
	}
}

function nullAction(){
	null
}

function initializeMenu(){
	menuReady = true;
}