// JavaScript Document
// dd menu Copyright 2006-2007 javascript-array.com 
// http://javascript-array.com/scripts/simple_drop_down_menu 
// For use with sdi_hst_navigation.css

var openTimeout		= 250; // The delay on hovering over the trigger
var timeout         = 250; // The delay on mousing out of the dropdown
var closetimer		= 0;
var opentimer		= 0;
var ddmenuitem      = 0;

// onmouseover="mopen('m1')" onmouseout="mclosetime()"

function aaa(id)
{
	ddmenuitem.style.visibility = 'visible';
}

// open hidden layer
function mopen(id)
{	
	// cancel close timer
	mcancelclosetime();
 
	// close old layer
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
 
	// get new layer and show it
	ddmenuitem = document.getElementById(id);

	opentimer = window.setTimeout(aaa, openTimeout);
}

// close showed layer
function mclose()
{
	if(ddmenuitem) ddmenuitem.style.visibility = 'hidden';
}
 
// go close timer
function mclosetime()
{
	mcancelopentime();
	closetimer = window.setTimeout(mclose, timeout);
}

function mcancelopentime()
{
	if(opentimer)
	{
		window.clearTimeout(opentimer);
		opentimer = null;
	}
}
 
// cancel close timer
function mcancelclosetime()
{
	if(closetimer)
	{
		window.clearTimeout(closetimer);
		closetimer = null;
	}
}
 
// close layer when click-out
document.onclick = mclose;