/*************************************************
Menu Script
**************************************************/
var timeout = 500;
var closetimer = 0;
var ddmenuitem = 0;
var ddmenuparent = 0;
var ddmenuparentwidth = 0

// open hidden layer
function menuOpen(id, anchorId, offsetX, offsetY)
{
	// cancel close timer
	menuCancelCloseTimer();

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

	// get new layer, the anchor and the layer child
	ddmenuitem = document.getElementById(id);
	var ddanchor = document.getElementById(anchorId);

	// set the positions of the items.
	ddmenuitem.style.left = findPos(ddanchor,'x') + offsetX + "px";
	ddmenuitem.style.top = ddanchor.offsetHeight + findPos(ddanchor,'y') + offsetY + "px";
	ddmenuitem.style.visibility = 'visible';
}

// close showed layer
function mclose()
{
	if(ddmenuitem) 
		ddmenuitem.style.visibility = 'hidden';
}

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

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

//find the position of the object passed
function findPos(obj,direction) 
{
	var curleft = curtop = 0;
	if (obj.offsetParent) 
	{
		do 
		{
			curleft += obj.offsetLeft;
			curtop += obj.offsetTop;
		}
		while (obj = obj.offsetParent);
		if(direction == 'x')
			return curleft
		else if(direction == 'y')
			return curtop
	}
}

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