// Copyright 2006-2007 javascript-array.com

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

// open hidden layer
function mopen(id, juhuu)
{	
	clearactive();
	
	if (juhuu.className.indexOf('active') == -1) {
		juhuu.className = 'menuitem mouseover';
	}
	// cancel close timer
	mcancelclosetime();

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

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	if(ddmenuitem) ddmenuitem.style.visibility = 'visible';

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

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

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

function clearactive() {
	$$('.mouseover').each(function(item) {
		if (item.className.indexOf('active') != -1) {
			item.className = 'menuitem active';
		} else {
			item.className = 'menuitem';
		}
	});
}

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