/*
source: 
http://www.digital-halide.com/cssmenu/multi/

===================================================
XHTML/CSS/DHTML Semantically correct drop down menu 
===================================================
Author: Sam Hampton-Smith
Site: http://www.hampton-smith.com

Description:	This script takes a nested set of <ul>s
		and turns it into a fully functional
		DHTML menu. All that is required is 
		the correct use of class names, and
		the application of some CSS.
		
Use:		Please leave this information at the
		top of this file, and it would be nice
		if you credited me/dropped me an email
		to let me know you have used the menu.
		sam AT hampton-smith.com


---------------------------------------------------
Credits: 	Inspiration/Code borrowed from Dave Lindquist (http://www.gazingus.org)
		Menu hide functionality was aided by some code I found on http://www.jessett.com/

*/


	var currentMenu = null;
	var mytimer = null;
	var timerOn = false;
	var opera = window.opera ? true : false;

	if (!document.getElementById)
		document.getElementById = function() { return null; }
	
	function initialiseMenu(menu, starter, root) {
//		var menuId = menu.attributes(0).value;
		var leftstarter = false;
	
		if (menu == null || starter == null) return;
			currentMenu = menu;
	
		starter.onmouseover = function() {
			if (currentMenu) {
				//alert(this.parentNode.parentNode.id + ' ' + currentMenu.id);
				if (this.parentNode.parentNode!=currentMenu) {
					currentMenu.style.visibility = "hidden";
					

				}
				if (this.parentNode.parentNode==root) {
					tempCurrentMenu = currentMenu
					while (tempCurrentMenu.parentNode.parentNode!=root) {
						tempCurrentMenu.parentNode.parentNode.style.visibility = "hidden";
						tempCurrentMenu = tempCurrentMenu.parentNode.parentNode;
					}
				}
				currentMenu = null;
				this.showMenu();
	        	}
		}
	
		menu.onmouseover = function() {
			if (currentMenu) {
				currentMenu = null;
				this.showMenu();
	        	}
		}	
	
		starter.showMenu = function() {
			if (!opera) {
				if (this.parentNode.parentNode==root) {
					menu.style.left = this.offsetLeft + "px";
					menu.style.top = this.offsetTop + this.offsetHeight + "px";
				}
				else {
				 	menu.style.left = this.offsetLeft + this.offsetWidth + "px";
				 	menu.style.top = this.offsetTop + "px";
				}
			}
			else {
				if (this.parentNode.parentNode==root) {
					menu.style.left = this.offsetLeft + "px";
					menu.style.top = this.offsetHeight + "px";
				}
				else {
				 	menu.style.left = this.offsetWidth + "px";
//					alert(this.offsetTop);
				 	menu.style.top = this.offsetTop + "px"; //menu.style.top - menu.style.offsetHeight + "px";
				}

			}
			menu.style.visibility = "visible";
			currentMenu = menu;
		}

		starter.onfocus	 = function() {
			starter.onmouseover();
		}
	
		menu.onfocus	 = function() {
//			currentMenu.style.visibility="hidden";
		}

		menu.showMenu = function() {
			menu.style.visibility = "visible";
			currentMenu = menu;
			stopTime();
		}

		menu.hideMenu = function()  {
			if (!timerOn) {
				//alert(root.id);
				mytimer = setInterval("killMenu('" + root.id + "');", 2000);
				timerOn = true;
				for (var x=0;x<menu.childNodes.length;x++) {
					if (menu.childNodes[x].nodeName=="LI") {
						if (menu.childNodes[x].getElementsByTagName("UL").length>0) {
							menuItem = menu.childNodes[x].getElementsByTagName("UL").item(0);
							menuItem.style.visibility = "hidden";
						}
					}
				}
			}
		}

		menu.onmouseout = function(event) {
			this.hideMenu();
		}

		starter.onmouseout = function() {
			for (var x=0;x<menu.childNodes.length;x++) {
				if (menu.childNodes[x].nodeName=="LI") {
					if (menu.childNodes[x].getElementsByTagName("UL").length>0) {
						menuItem = menu.childNodes[x].getElementsByTagName("UL").item(0);
						menuItem.style.visibility = "hidden";
					}
				}
			}
			menu.style.visibility = "hidden";
			//menu.hideMenu();
		}
}

	function killMenu(root) {
		var root = document.getElementById(root);
		for (var x=0;x<root.childNodes.length;x++) {
			if (root.childNodes[x].nodeName=="LI") {
				menu = root.childNodes[x];
    		for (var y=0;y<root.childNodes.length;y++) {
					if (menu.childNodes[y]) {
            //alert (menu.childNodes[y].nodeName);
            if (menu.childNodes[y].nodeName == "UL") {
  					  menuItem = menu.childNodes[y];
              menuItem.style.visibility = "hidden";
  				  }
    			}
  			}
			}
		}
		//while (menu.parentNode.parentNode!=root) {
		//	menu.parentNode.parentNode.style.visibility = "hidden";
		//	menu = menu.parentNode.parentNode;
		//}
		stopTime();
	}
	function stopTime() {
		if (mytimer) {
		 	 clearInterval(mytimer);
			 mytimer = null;
			 timerOn = false;
		}
	} 

	window.onload = function() {
		//alert("loaded");
		var root = document.getElementById("topNav");
		//alert("About to execute getmenus");
		getMenus(root, root);
	}

function getMenus(elementItem, root) {
	var selectedItem;
	var menuStarter;
	var menuItem;
	//alert("in getmenus");
	//alert(elementItem.childNodes.length);
	for (var x=0;x<elementItem.childNodes.length;x++) {
		//alert(elementItem.childNodes[x].nodeName);
		if (elementItem.childNodes[x].nodeName=="LI") {
			//alert("Yes!");
			if (elementItem.childNodes[x].getElementsByTagName("UL").length>0) {
				//alert("Set up");
				menuStarter = elementItem.childNodes[x].getElementsByTagName("A").item(0);
				menuItem = elementItem.childNodes[x].getElementsByTagName("UL").item(0);
				getMenus(menuItem, root);
				initialiseMenu(menuItem, menuStarter, root);
			}
		}
	}
	//return true;
}


// JavaScript Document

ypSlideOutMenu.Registry = []
ypSlideOutMenu.aniLen = 250
ypSlideOutMenu.hideDelay = 1500
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
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
this.gRef = "ypSlideOutMenu_"+id
eval(this.gRef+"=this")
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
for (menu in reg) if (id != menu) ypSlideOutMenu.hide(menu)
if (obj.hideTimer) { reg[id].hideTimer = window.clearTimeout(reg[id].hideTimer) }
if (!obj.open && !obj.aniTimer) reg[id].startSlide(true)
}
}
ypSlideOutMenu.hideMenu = function(id)
{
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)
obj.hideTimer = 0
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])
}
ypSlideOutMenu.prototype.onactivate = function() { }
ypSlideOutMenu.prototype.ondeactivate = function() { }

// display foot

	var menus = [
		new ypSlideOutMenu("menu1", "down", '0%', '0%', 779, 500)

	]

	for (var i = 0; i < menus.length; i++) {
		menus[i].onactivate = new Function("document.getElementById('act" + i + "').className='active';");
		menus[i].ondeactivate = new Function("document.getElementById('act" + i + "').className='';");
	}

  ypSlideOutMenu.writeCSS();