// JavaScript Document

var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;
var chng;
var  mclose;
// open hidden layer

function mopen(id , chg )
{	
	// cancel close timer
	mcancelclosetime();
	//alert( document.getElementById(id) );
	// close old layer
	if(ddmenuitem) ddmenuitem.style.display ='none';

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.display ='block';
//	alert( chng );
	if( document.getElementById( chng ) != undefined )
	{
		document.getElementById( chng ).className	=	"";
	}
	document.getElementById( chg ).className	=	"menuhover";
	chng	=	chg;
}
// close showed layer

function mclose( )
{
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	if( chng != null ) {
		
		document.getElementById( chng ).className	=	"navigation_listing_01";
	}
}

// go close timer
function mclosetime()
{
	if(parseInt(mclose))
	{
	closetimer = window.setTimeout(mclose, timeout);
	}
}

// cancel close timer
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}

// close layer when click-out
document.onclick = mclose;