var isIE=document.all?1:0;
var isNS6=document.getElementById && !document.all?1:0;
var isNS4=!document.getElementById && document.layers?1:0;
var enableNS=0;
var fadeOutLayerID="";
var delay=350;

function startTimer(){
	if(document.all.timerLayer && isIE){
		document.all.timerLayer.innerHTML=getDateString();
		if(!window.timer)window.timer=setInterval("startTimer()",250);
	}
}

function mainOut(ID,obj){
	if(isIE){
		if(obj)obj.className="mainMenuOut";
	}
}

function showLayer(layerID){
	if(enableNS==0 && (isNS4 || isNS6))return;
	if(fadeOutLayerID!="")fadeOut();
	if(isIE)document.all[layerID].style.visibility="visible";
	else if(isNS6)document.getElementById(layerID).style.visibility="visible";
	else document[layerID].visibility="visible";	
}

function hideLayer(layerID){
	if(enableNS==0 && (isNS4 || isNS6)){
		fadeOut();
		return;
	}
	if(fadeOutLayerID!="")fadeOut();
	fadeOutLayerID=layerID;
	if(window.drawit)clearInterval(window.drawit);
	window.drawit=setInterval("fadeOut()",delay);
}

function fadeOut(){
	if(enableNS==0 && (isNS4 || isNS6))return;
	if(isIE)document.all[fadeOutLayerID].style.visibility="hidden";
	else if(isNS6)document.getElementById(fadeOutLayerID).style.visibility="hidden";
	else document[fadeOutLayerID].visibility="hidden";
	fadeOutLayerID="";
	if(window.drawit)
		clearInterval(window.drawit);
}