// Copyright 2006-2007 javascript-array.com

var timeout	= 0;
var closetimer	= 0;
var ddmenuitem	= 0;
var active_elem = document.getElementsByName("act");

// open hidden layer
function mopen(id)
{	
	var id_str = id.toString();
	var str_cut = id_str.indexOf("_");
	var elem_val = id_str.substring(0, str_cut);
	

	// close old layer
	if(ddmenuitem) {
		var ddmi_cut = ddmenuitem["id"].indexOf("_");
		var ddmi_str = ddmenuitem["id"].substring(0, ddmi_cut);
		
		if (active_elem.length > 0) {
			if (ddmi_str == active_elem[0]["id"]) {
				document.getElementById(ddmi_str).className = ddmi_str + "_act";
			} else {
				document.getElementById(ddmi_str).className = ddmi_str;
			}
		} else {
			document.getElementById(ddmi_str).className = ddmi_str;
		}
		
		ddmenuitem.style.visibility = 'hidden';
	}
	
	document.getElementById(elem_val).className = elem_val + "_hover";
	
	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	ddmenuitem.style.visibility = 'visible';
	// cancel close timer
	mcancelclosetime();

}
// close showed layer
function mclose()
{
	if(ddmenuitem) {
		var ddmi_cut = ddmenuitem["id"].indexOf("_");
		var ddmi_str = ddmenuitem["id"].substring(0, ddmi_cut);
		
		if (active_elem.length > 0) {
			if (ddmi_str == active_elem[0]["id"]) {
				document.getElementById(ddmi_str).className = ddmi_str + "_act";
			} else {
				document.getElementById(ddmi_str).className = ddmi_str;
			}
		} else {
			document.getElementById(ddmi_str).className = ddmi_str;
		}
		
		ddmenuitem.style.visibility = 'hidden';
	}
}

// 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;