// JavaScript Document
// Copyright 2006-2007 javascript-array.com
// Modifications Stephen Baker - American Web Tech - 2009

var timeout	= 50;
var closetimer	= 0;
var ddmenuitem	= 0;
var spanitem    = 0;
var tabitem     = 0;

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

	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	if(spanitem) spanitem.className = 'inactive-span';
	if(tabitem) tabitem.className = 'inactive-tab';

	// get new layer and show it
	ddmenuitem = document.getElementById(id);
	if (ddmenuitem != null) { 
          ddmenuitem.style.visibility = 'visible';
     }
	
	//set span to active class
	spanitem = document.getElementById(id.replace('m','s'));
	spanitem.className = 'active-span';
	
	//set tab to active class
	tabitem = document.getElementById(id.replace('m','t'));
	tabitem.className = 'active-tab';
}
// close showed layer
function mclose()
{
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
	if(spanitem) spanitem.className = 'inactive-span';
	if(tabitem) tabitem.className  = 'inactive-tab';
}

// 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;