// Drop Down Menu

var TimeOut			= 300;
var currentLayer	= null;
var currentitem		= null;
var currentLayerNum	= 0;
var noClose			= 0;
var closeTimer		= null;

// Open Hidden Layer
function mopen(n)
{
	var i = document.getElementById("menu"+n);
	var mm = document.getElementById("mmenu"+n);
	
	//20100219Firefox‘Ήž
	if(navigator.userAgent.indexOf("Firefox") > 0 ){
		document.getElementById("menu_table"+n).align = "center";
		document.getElementById("menu1").style.left = "-112px";
		document.getElementById("menu2").style.left = "100px";
		document.getElementById("menu3").style.left = "322px";
	}else{i.style.top = "50px";}


	if (1)
	{
		mcancelclosetime();
		i.style.visibility='visible';

		if (currentLayer && (currentLayerNum != n))
			currentLayer.style.visibility='hidden';
			currentLayer = i;
			currentitem = mm;
			currentLayerNum = n;
	}
	else if (currentLayer)
	{
		currentLayer.style.visibility='hidden';
		currentLayerNum = 0;
		currentitem = null;
		currentLayer = null;
	}
}

// Turn On Close Timer
function mclosetime()
{
	closeTimer = window.setTimeout(mclose, TimeOut);
}

// Cancel Close Timer
function mcancelclosetime()
{
	if(closeTimer)
	{
		window.clearTimeout(closeTimer);
		closeTimer = null;
	}
}

// Close Showed Layer
function mclose()
{
	if(currentLayer && noClose!=1)
	{
		currentLayer.style.visibility='hidden';
		currentLayerNum = 0;
		currentLayer = null;
		currentitem = null;
	}
	else
	{
		noClose = 0;
	}

	currentLayer = null;
	currentitem = null;
}

// Close Layer Then Click-out
document.onclick = mclose;