//preload the nav bar

function preload(src) {
	var img = new Image()
	img.src = src
}

preload("images/hover_contact.gif")
preload("images/hover_employment.gif")
preload("images/hover_home.gif")
preload("images/hover_employment.gif")
preload("images/hover_links.gif")
preload("images/hover_operations.gif")
preload("images/hover_products.gif")
preload("images/hover_sustainable.gif")
preload("images/hover_whoarewe.gif")



/*****************************************************
 * ypSlideOutMenu
 * http://ypslideoutmenus.sourceforge.net/
 * 3/04/2001
 * 
 * a nice little script to create exclusive, slide-out
 * menus for ns4, ns6, mozilla, opera, ie4, ie5 on 
 * mac and win32. I've got no linux or unix to test on but 
 * it should(?) work... 
 *
 * Licensed under AFL 2.0
 * http://www.opensource.org/licenses/afl-2.0.php
 *
 * Revised: 
 * - 08/29/2002 : added .hideAll()
 * - 04/15/2004 : added .writeCSS() to support more 
 *                than 30 menus.
 *
 * --youngpup--
 *****************************************************/

ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 250
ypSlideOutMenu.hideDelay = 1000
ypSlideOutMenu.minCPUResolution = 10

// constructor
function ypSlideOutMenu(id, dir, left, top, width, height)
{
	this.ie  = document.all ? 1 : 0
	this.ns4 = document.layers ? 1 : 0
	this.dom = document.getElementById ? 1 : 0
	this.css = "";

	if (this.ie || this.ns4 || this.dom) {
		this.id			 = id
		this.dir		 = dir
		this.orientation = dir == "left" || dir == "right" ? "h" : "v"
		this.dirType	 = dir == "right" || dir == "down" ? "-" : "+"
		this.dim		 = this.orientation == "h" ? width : height
		this.hideTimer	 = false
		this.aniTimer	 = false
		this.open		 = false
		this.over		 = false
		this.startTime	 = 0

		// global reference to this object
		this.gRef = "ypSlideOutMenu_"+id
		eval(this.gRef+"=this")

		// add this menu object to an internal list of all menus
		ypSlideOutMenu.Registry[id] = this

		var d = document

		var strCSS = "";
		strCSS += '#' + this.id + 'Container { visibility:hidden; '
		strCSS += 'left:' + left + 'px; '
		strCSS += 'top:' + top + 'px; '
		strCSS += 'overflow:hidden; z-index:10000; }'
		strCSS += '#' + this.id + 'Container, #' + this.id + 'Content { position:absolute; '
		strCSS += 'width:' + width + 'px; '
		strCSS += 'height:' + height + 'px; '
		strCSS += 'clip:rect(0 ' + width + ' ' + height + ' 0); '
		strCSS += '}'

		this.css = strCSS;

		this.load()
	}
}

ypSlideOutMenu.writeCSS = function() {
	document.writeln('<style type="text/css">');

	for (var id in ypSlideOutMenu.Registry) {
		document.writeln(ypSlideOutMenu.Registry[id].css);
	}

	document.writeln('</style>');
}

ypSlideOutMenu.prototype.load = function() {
	var d = document
	var lyrId1 = this.id + "Container"
	var lyrId2 = this.id + "Content"
	var obj1 = this.dom ? d.getElementById(lyrId1) : this.ie ? d.all[lyrId1] : d.layers[lyrId1]
	if (obj1) var obj2 = this.ns4 ? obj1.layers[lyrId2] : this.ie ? d.all[lyrId2] : d.getElementById(lyrId2)
	var temp

	if (!obj1 || !obj2) window.setTimeout(this.gRef + ".load()", 100)
	else {
		this.container	= obj1
		this.menu		= obj2
		this.style		= this.ns4 ? this.menu : this.menu.style
		this.homePos	= eval("0" + this.dirType + this.dim)
		this.outPos		= 0
		this.accelConst	= (this.outPos - this.homePos) / ypSlideOutMenu.aniLen / ypSlideOutMenu.aniLen 

		// set event handlers.
		if (this.ns4) this.menu.captureEvents(Event.MOUSEOVER | Event.MOUSEOUT);
		this.menu.onmouseover = new Function("ypSlideOutMenu.showMenu('" + this.id + "')")
		this.menu.onmouseout = new Function("ypSlideOutMenu.hideMenu('" + this.id + "')")

		//set initial state
		this.endSlide()
	}
}
	
ypSlideOutMenu.showMenu = function(id)
{
	var reg = ypSlideOutMenu.Registry
	var obj = ypSlideOutMenu.Registry[id]
	
	if (obj.container) {

		obj.over = true
		// close other menus.
		for (menu in reg) if (id != menu) ypSlideOutMenu.hide(menu)

		// if this menu is scheduled to close, cancel it.
		if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }

		// if this menu is closed, open it.
		if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)
	}
}

ypSlideOutMenu.hideMenu = function(id)
{
	// schedules the menu to close after <hideDelay> ms, which
	// gives the user time to cancel the action if they accidentally moused out
	var obj = ypSlideOutMenu.Registry[id]
	if (obj.container) {
		if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
		obj.hideTimer = window.setTimeout("ypSlideOutMenu.hide('" + id + "')", ypSlideOutMenu.hideDelay);
	}
}

ypSlideOutMenu.hideAll = function()
{
	var reg = ypSlideOutMenu.Registry
	for (menu in reg) {
		ypSlideOutMenu.hide(menu);
		if (menu.hideTimer) window.clearTimeout(menu.hideTimer);
	}
}

ypSlideOutMenu.hide = function(id)
{
	var obj = ypSlideOutMenu.Registry[id]
	obj.over = false

	if (obj.hideTimer) window.clearTimeout(obj.hideTimer)
	
	// flag that this scheduled event has occured.
	obj.hideTimer = 0

	// if this menu is open, close it.
	if (obj.open && !obj.aniTimer) obj.startSlide(false)
}

ypSlideOutMenu.prototype.startSlide = function(open) {
	this[open ? "onactivate" : "ondeactivate"]()
	this.open = open
	if (open) this.setVisibility(true)
	
	this.startTime = (new Date()).getTime()	
	this.aniTimer = window.setInterval(this.gRef + ".slide()", ypSlideOutMenu.minCPUResolution)
}

ypSlideOutMenu.prototype.slide = function() {
	var elapsed = (new Date()).getTime() - this.startTime
	if (elapsed > ypSlideOutMenu.aniLen) this.endSlide()
	else {
		var d = Math.round(Math.pow(ypSlideOutMenu.aniLen-elapsed, 2) * this.accelConst)
		if (this.open && this.dirType == "-")		d = -d
		else if (this.open && this.dirType == "+")	d = -d
		else if (!this.open && this.dirType == "-")	d = -this.dim + d
		else										d = this.dim + d

		this.moveTo(d)
	}
}

ypSlideOutMenu.prototype.endSlide = function() {
	this.aniTimer = window.clearTimeout(this.aniTimer)
	this.moveTo(this.open ? this.outPos : this.homePos)
	if (!this.open) this.setVisibility(false)
	if ((this.open && !this.over) || (!this.open && this.over)) {
		this.startSlide(this.over)
	}
}

ypSlideOutMenu.prototype.setVisibility = function(bShow) { 
	var s = this.ns4 ? this.container : this.container.style
	s.visibility = bShow ? "visible" : "hidden"
}
ypSlideOutMenu.prototype.moveTo = function(p) { 
	this.style[this.orientation == "h" ? "left" : "top"] = this.ns4 ? p : p + "px"
}
ypSlideOutMenu.prototype.getPos = function(c) {
	return parseInt(this.style[c])
}

// events
ypSlideOutMenu.prototype.onactivate		= function() { }
ypSlideOutMenu.prototype.ondeactivate	= function() { }


menuHeights = [167, 167, 167, 115]
menuWidths = [127, 120, 175, 170]
menuLefts = [86, 184, 364, 528]


function addStyle(selector, rule){
 document.write("<style>"+selector+"{"+rule+"}<\/style>")
}



if (navigator.platform.toLowerCase().indexOf("mac") >-1)
{
	addStyle("body .dropdown a", "font-size:9px")
	addStyle("body .dropdown ol li", "padding-top:8px")
}

var menus = []

menuids = "li_who li_operations li_sustdev li_employment".split(" ")

menuels = {els:0}

for (var i=0; i<menuids.length; i++) {
	var el = document.createElement("div")
//	el.style.display = "none"
	el.id = menuids[i] + "_dropdownContainer"
	el.className = "dropmenudiv"
	menuels[menuids[i]] = el
	menuels.els = i + 1
	new ypSlideOutMenu(menuids[i] + "_dropdown", "down", menuLefts[i], 0, menuWidths[i], menuHeights[i])
}



/*
var menus = [
  												 //left, top, width, height
	new ypSlideOutMenu("li_who_dropdown", "down", 93, 0, 127, menuHeights[0]),
	//new ypSlideOutMenu("products_sub", "down", 195, 30, 145, menuHeights[1]),
	//new ypSlideOutMenu("mii_sub", "down", 339, 30, 190, menuHeights[2]),
	//new ypSlideOutMenu("ir_sub", "down", 528, 30, 133, menuHeights[3]),
	//new ypSlideOutMenu("contact_sub", "down", 660, 30, 100, menuHeights[4])
]*/

ypSlideOutMenu.writeCSS();



function hoverInit() {

	if (typeof hoverdone == "undefined") {
		hoverdone = false
	}
	if (!hoverdone) { 
		hoverdone = true
		for (var i=0; i<menuels.els; i++) {
			var el = menuels[menuids[i]]
			document.getElementById("content").style.position = "relative"
			document.getElementById("content").appendChild(el)
			
			el.style.position = "absolute"
			el.zIndex = "1000"
			//document.body.appendChild(el)
			//alert(document.getElementById("header"))
			var innerlinks = ""
			
			
			
			
			var li = document.getElementById(menuids[i])
			
			if (li.getElementsByTagName("menu").length) {
				for (var j=0; j<li.getElementsByTagName("menu")[0].getElementsByTagName("li").length; j++) {
					innerlinks += li.getElementsByTagName("menu")[0].getElementsByTagName("li")[j].innerHTML + ""
				}
			}
			el.innerHTML = "<div class='dropdownmenucontainer' id='" + menuids[i] + "_dropdownContent'>" + innerlinks + "</div>"

			li.getElementsByTagName("a")[0].onmouseover = function() {
				ypSlideOutMenu.showMenu(this.parentNode.id + '_dropdown')
			}
			li.onmouseout = function() {
				ypSlideOutMenu.hideMenu(this.id + '_dropdown')
			}
		}
		
		//alert(2)
		
				
		
		
		
		
	}
	
	
//	onmouseover="ypSlideOutMenu.showMenu('profile_sub');this.className='active'" onmouseout="ypSlideOutMenu.hideMenu('profile_sub');this.className=''"
}




// used by the submenu expand / contract
function toggle(id) {
	var ele = document.getElementById(id);

	if (ele != null) {
		if (ele.style.display == "block") {
			ele.style.display = "none";
		} else {
			ele.style.display = "block";
		}
	}
	
	return false;
}
























/*

function hoverInit(navItems) {
	navItems = navItems.split(" ");
	
	for (var i=0; i<navItems.length; i++) {
		var el = document.getElementById(navItems[i])
		if (el) {
			
			var els = el.getElementsByTagName("li")

			if (els.length) {
						
				var menu = new Array()
			
				for (var j=0; j<els.length; j++) {
					menu[j] = els[j].innerHTML
				}
				if (menu.length) {
					el.menu = menu
					el.onmouseover = function(e){ 
						document.getElementById("nav").className = "focused"
						if (!e && window.event) e = window.event
						dropdownmenu(this, e, this.menu)
					}
					//el.onclick = function(){ return clickreturnvalue() }
					el.onmouseout = function() {
						delayhidemenu()
						document.getElementById("nav").className = "unfocused"
					}	
				}
			}
			else {
				el.onmouseover = function() {
					document.getElementById("nav").className = "focused"
				}
				el.onmouseout = function() {
					document.getElementById("nav").className = "unfocused"
				}
			}
		}
	}
	

}




*/


/***********************************************
* AnyLink Drop Down Menu- © Dynamic Drive (www.dynamicdrive.com)
* This notice MUST stay intact for legal use
* Visit http://www.dynamicdrive.com/ for full source code
***********************************************/

/*
		
var menuwidth='165px' //default menu width
var menubgcolor='lightyellow'  //menu bgcolor
var disappeardelay=250  //menu disappear speed onMouseout (in miliseconds)
var hidemenu_onclick="yes" //hide menu when user clicks within menu?

/////No further editting needed

var ie4=document.all
var ns6=document.getElementById&&!document.all

if (ie4||ns6)
document.write('<div id="dropmenudiv" style="visibility:hidden;width:'+menuwidth+';background-color:'+menubgcolor+'" onMouseover="clearhidemenu()" onMouseout="dynamichide(event)"></div>')

function getposOffset(what, offsettype){
var totaloffset=(offsettype=="left")? what.offsetLeft : what.offsetTop;
var parentEl=what.offsetParent;
while (parentEl!=null){
totaloffset=(offsettype=="left")? totaloffset+parentEl.offsetLeft : totaloffset+parentEl.offsetTop;
parentEl=parentEl.offsetParent;
}
return totaloffset;
}


function showhide(obj, e, visible, hidden, menuwidth){
if (ie4||ns6)
dropmenuobj.style.left=dropmenuobj.style.top="-500px"
if (menuwidth!=""){
//dropmenuobj.widthobj=dropmenuobj.style
//dropmenuobj.widthobj.width=menuwidth
}
if (e.type=="click" && obj.visibility==hidden || e.type=="mouseover") {
obj.visibility=visible
}
else if (e.type=="click") {
obj.visibility=hidden
}





}

function iecompattest(){
return (document.compatMode && document.compatMode!="BackCompat")? document.documentElement : document.body
}

function clearbrowseredge(obj, whichedge){
var edgeoffset=0
if (whichedge=="rightedge"){
var windowedge=ie4 && !window.opera? iecompattest().scrollLeft+iecompattest().clientWidth-15 : window.pageXOffset+window.innerWidth-15
dropmenuobj.contentmeasure=dropmenuobj.offsetWidth
if (windowedge-dropmenuobj.x < dropmenuobj.contentmeasure)
edgeoffset=dropmenuobj.contentmeasure-obj.offsetWidth
}
else{
var topedge=ie4 && !window.opera? iecompattest().scrollTop : window.pageYOffset
var windowedge=ie4 && !window.opera? iecompattest().scrollTop+iecompattest().clientHeight-15 : window.pageYOffset+window.innerHeight-18
dropmenuobj.contentmeasure=dropmenuobj.offsetHeight
if (windowedge-dropmenuobj.y < dropmenuobj.contentmeasure){ //move up?
edgeoffset=dropmenuobj.contentmeasure+obj.offsetHeight
if ((dropmenuobj.y-topedge)<dropmenuobj.contentmeasure) //up no good either?
edgeoffset=dropmenuobj.y+obj.offsetHeight-topedge
}
}
return edgeoffset
}

function populatemenu(what){
if (ie4||ns6)
dropmenuobj.innerHTML=what.join("")
}


function dropdownmenu(obj, e, menucontents, menuwidth){

if (window.event) event.cancelBubble=true
else if (e.stopPropagation) e.stopPropagation()
clearhidemenu()
dropmenuobj=document.getElementById? document.getElementById("dropmenudiv") : dropmenudiv

populatemenu(menucontents)
if (ie4||ns6){
showhide(dropmenuobj.style, e, "visible", "hidden", menuwidth)
dropmenuobj.x=getposOffset(obj, "left")
dropmenuobj.y=getposOffset(obj, "top")
dropmenuobj.style.left=dropmenuobj.x-clearbrowseredge(obj, "rightedge")+"px"
dropmenuobj.style.top=dropmenuobj.y-clearbrowseredge(obj, "bottomedge")+obj.offsetHeight+"px"
dropmenuobj.className = "drop_" + obj.id
}

return clickreturnvalue()
}

function clickreturnvalue(){
if (ie4||ns6) return false
else return true
}

function contains_ns6(a, b) {
while (b.parentNode)
if ((b = b.parentNode) == a)
return true;
return false;
}

function dynamichide(e){
if (ie4&&!dropmenuobj.contains(e.toElement))
delayhidemenu()
else if (ns6&&e.currentTarget!= e.relatedTarget&& !contains_ns6(e.currentTarget, e.relatedTarget))
delayhidemenu()
}

function hidemenu(e){
if (typeof dropmenuobj!="undefined"){
if (ie4||ns6)
dropmenuobj.style.visibility="hidden"
}
}

function delayhidemenu(){
if (ie4||ns6)
delayhide=setTimeout("hidemenu()",disappeardelay)
}

function clearhidemenu(){
if (typeof delayhide!="undefined")
clearTimeout(delayhide)
}

if (hidemenu_onclick=="yes")
document.onclick=hidemenu
*/