// Copyright 2006-2007 javascript-array.com

var timeout	= 500;
var closetimer	= 0;
var ddmenuitem	= 0;

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

	// close old layer
	mclose();

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	//if (ddmenuitem.parentNode.offsetHeight)
  //  ddmenuitem.style.top = (ddmenuitem.parentNode.offsetHeight - 5) + 'px';
	ddmenuitem.style.display = 'block';
  }

// close showed layer
function mclose() {
	if (ddmenuitem) ddmenuitem.style.display = 'none';
  }

// go close timer
function mclosetime() {
	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;