// By Christopher Graham crgrah@hotmail.com 26/02/09
// pause and drop down menus

var timeout	= 5000;
var closetimer	= 0;
var t,x,y,ddmenuitem	= 0;

// open hidden layer
function mopen(id)
{	
	// cancel close timer
	mcancelclosetime();

	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	//ddmenuitem.style.visibility = 'visible';
	x=window.setTimeout("rolloption(document.getElementById('sub1'));",100);
	y=window.setTimeout("rolloption(document.getElementById('sub2'));",200);
	t=window.setTimeout("rolloption(document.getElementById('sub3'));",300);
}

// reveal menu items 1 at a time
function rolloption(menuitem) 
{
	menuitem.style.visibility='visible';
}

// close showed layer
function mclose()
{
	if(ddmenuitem)
		{
		ddmenuitem.style.visibility = 'hidden';
		document.getElementById('sub1').style.visibility='hidden';
		document.getElementById('sub2').style.visibility='hidden';
		document.getElementById('sub3').style.visibility='hidden';
		}
}

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

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

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