// You can change part of the look & feel here  //
// the rest is done in the stylesheet //
mtDropDown.spacerGif = "/images/spacer.gif"; 
mtDropDown.dingbatOn = "/images/spacer.gif"; 
mtDropDown.dingbatOff = "/images/spacer.gif"; 
mtDropDown.dingbatSize = 14; 
mtDropDown.seperator = "/images/menu-seperator.gif";
mtDropDown.seperatorHeight = 1;
mtDropDown.menuPadding = 1; 
mtDropDown.itemPadding = 5; 
mtDropDown.shadowSize = 0; 
mtDropDown.shadowOffset = 0; 
mtDropDown.shadowColor = "#000000"; 
mtDropDown.backgroundColor = "#e2dfe8"; 
mtDropDown.startCode = '<tr><td colspan="2" background="/images/drop-down-shade.gif"><img src="/images/spacer.gif" alt="" width="1" height="4" /></td></tr>';
mtDropDown.menuWidth = 155;
mtDropDown.menuItemHeight = 24; // Safari Hack
highlightActuator = 1; // flag to use hover change outs on the object to which the menu is attached 

// you can change speed of the menu here //
mtDropDown.hideDelay = 200; 
mtDropDown.slideTime = 200; 


// dont touch any of this code from here down //
mtDropDown.reference = {topLeft:1,topRight:2,bottomLeft:3,bottomRight:4};
mtDropDown.direction = {down:1,right:2};
mtDropDown.registry = [];
mtDropDown._maxZ = 100;

mtDropDown.isSupported = function() 
{
	if (typeof mtDropDown.isSupported.r == "boolean") 
	return mtDropDown.isSupported.r;
	var ua = navigator.userAgent.toLowerCase();
	var an = navigator.appName;
	var r = false;
	if (ua.indexOf("gecko") > -1) r = true; 
	else if (an == "Microsoft Internet Explorer") {
	if (document.getElementById) r = true; 
	}
	mtDropDown.isSupported.r = r;
	return r;
}
	

mtDropDown.initialize = function() 
{
	for (var i = 0, menu = null; menu = this.registry[i]; i++) 
	{
		menu.initialize();
	}
}

mtDropDown.renderAll = function() 
{
	var aMenuHtml = [];
	for (var i = 0, menu = null; menu = this.registry[i]; i++) 
	{
		aMenuHtml[i] = menu.toString();
	}
	document.write(aMenuHtml.join(""));
}

function mtDropDown(oActuator, iDirection, iLeft, iTop, iReferencePoint, parentMenuSet) 
{
	this.addItem = addItem;
	this.addSeperator = addSeperator;
	this.addMenu = addMenu;
	this.toString = toString;
	this.initialize = initialize;
	this.isOpen = false;
	this.show = show;
	this.hide = hide;
	this.items = [];
	
	this.onactivate = new Function(); 
	this.ondeactivate = new Function(); 
	this.onmouseover = new Function(); 
	this.onqueue = new Function(); 
	
	this.index = mtDropDown.registry.length;
	mtDropDown.registry[this.index] = this;
	var id = "mtDropDown" + this.index;
	var contentHeight = null;
	var contentWidth = null;
	var childMenuSet = null;
	var animating = false;
	var childMenus = [];
	var slideAccel = -1;
	var elmCache = null;
	var ready = false;
	var _this = this;
	var a = null;
	var pos = iDirection == mtDropDown.direction.down ? "top" : "left";
	var dim = null;

	function addItem(sText, sUrl, sStyleNum) 
	{
		var item = new mtDropDownItem(sText, sUrl, sStyleNum, this);
		item._index = this.items.length;
		this.items[item._index] = item;
	}

	function addSeperator() 
	{
		var item = new mtDropDownSeperator(this);
		item._index = this.items.length;
		this.items[item._index] = item;
	}


	function addMenu(oMenuItem) 
	{
//		if (!oMenuItem.parentMenu == this) throw new Error("Cannot add a menu here");
		if (childMenuSet == null) childMenuSet = new mtDropDownSet(mtDropDown.direction.right, 0, 0, mtDropDown.reference.topRight);
		var m = childMenuSet.addMenu(oMenuItem);
		childMenus[oMenuItem._index] = m;
		m.onmouseover = child_mouseover;
		m.ondeactivate = child_deactivate;
		m.onqueue = child_queue;
		return m;
	}
	
	function initialize() 
	{
		initCache();
		initEvents();
		initSize();
		ready = true;
	}
	
	function show() 
	{
		if (ready) 
		{
			_this.isOpen = true;
			animating = true;
			setContainerPos();
			elmCache["clip"].style.visibility = "visible";
			elmCache["clip"].style.zIndex = mtDropDown._maxZ++;
			
			slideStart();
			_this.onactivate();
		}
	}
	
	function hide() 
	{
		if (ready) 
		{
			_this.isOpen = false;
			animating = true;
			for (var i = 0, item = null; item = elmCache.item[i]; i++) 
			dehighlight(item);
			if (childMenuSet) childMenuSet.hide();
			slideStart();

			_this.ondeactivate();
		}
	}
	
	function setContainerPos() 
	{
		var sub = oActuator.constructor == mtDropDownItem; 
		var act = sub ? oActuator.parentMenu.elmCache["item"][oActuator._index] : oActuator; 
		var el = act;
		var x = 0;
		var y = 0;
		var minX = 0;
		var maxX = (window.innerWidth ? window.innerWidth : document.body.clientWidth) - parseInt(elmCache["clip"].style.width);
		var minY = 0;
		var maxY = (window.innerHeight ? window.innerHeight : document.body.clientHeight) - parseInt(elmCache["clip"].style.height);
		
		while (sub ? el.parentNode.className.indexOf("mtDropdownMenu") == -1 : el.offsetParent) 
		{
			x += el.offsetLeft;
			y += el.offsetTop;
			if (el.scrollLeft) x -= el.scrollLeft;
			if (el.scrollTop) y -= el.scrollTop;
			el = el.offsetParent;
		}
	
		if (oActuator.constructor == mtDropDownItem) 
		{
			x += parseInt(el.parentNode.style.left);
			y += parseInt(el.parentNode.style.top);
		}
		
		switch (iReferencePoint) 
		{
			case mtDropDown.reference.topLeft:
				break;
			case mtDropDown.reference.topRight:
				x += act.offsetWidth;
				break;
			case mtDropDown.reference.bottomLeft:
				y += act.offsetHeight;
				break;
			case mtDropDown.reference.bottomRight:
				x += act.offsetWidth;
				y += act.offsetHeight;
				break;
		}
		// hack for the safari browser
		if ( navigator.appVersion.indexOf("Safari") > -1)
		{
			if (act.className.indexOf("item") > -1)
			{
				x = getPos('x',act);
				y = getPos('y',act.children[0]);
				switch (iReferencePoint) 
				{
					case mtDropDown.reference.topLeft:
						break;
					case mtDropDown.reference.topRight:
						x += mtDropDown.menuWidth - 2;
						break;
					case mtDropDown.reference.bottomLeft:
						y += mtDropDown.menuItemHeight;
						break;
					case mtDropDown.reference.bottomRight:
						x += mtDropDown.menuWidth - 2;
						y += mtDropDown.menuItemHeight;
						break;
				}
			}
			else
			{
				if (iDirection == mtDropDown.direction.down)
				{
					// another hack for the initial drop down
					y += 5;
				}
			}
		}
		
		x += iLeft;
		y += iTop;
		x = Math.max(Math.min(x, maxX), minX);
		y = Math.max(Math.min(y, maxY), minY);
		elmCache["clip"].style.left = x + "px";
		elmCache["clip"].style.top = y + "px";
	}
	
	function getPos(whichPos,theObj) 
	{
		var posX = 0;
		var posY = 0;
		var parent = theObj;
		while (parent && parent.tagName != "BODY" && parent.tagName != "HTML") {
			posX += parent.offsetLeft;
			posY += parent.offsetTop;
			parent = parent.offsetParent;
		} 
		if (whichPos == "x") return posX;
		else if (whichPos == "y") return posY;
		else if (whichPos == "xy") return posX + "," + posY;
	} 

	
	
	function slideStart() 
	{
		var x0 = parseInt(elmCache["content"].style[pos]);
		var x1 = _this.isOpen ? 0 : -dim;
		if (a != null) a.stop();
		a = new Accelimation(x0, x1, mtDropDown.slideTime, slideAccel);
		a.onframe = slideFrame;
		a.onend = slideEnd;
		a.start();
	}
	
	function slideFrame(x) 
	{
		elmCache["content"].style[pos] = x + "px";
	}
	
	function slideEnd() 
	{
		if (!_this.isOpen) elmCache["clip"].style.visibility = "hidden";
		animating = false;
	}
	
	function initSize() 
	{
		var ow = elmCache["items"].offsetWidth;
		var oh = elmCache["items"].offsetHeight;
		var ua = navigator.userAgent.toLowerCase();
		
		elmCache["clip"].style.width = ow + mtDropDown.shadowSize + 2 + "px";
		elmCache["clip"].style.height = oh + mtDropDown.shadowSize + 2 + "px";
		
		elmCache["content"].style.width = ow + mtDropDown.shadowSize + "px";
		elmCache["content"].style.height = oh + mtDropDown.shadowSize + "px";
		contentHeight = oh + mtDropDown.shadowSize;
		contentWidth = ow + mtDropDown.shadowSize;
		dim = iDirection == mtDropDown.direction.down ? contentHeight : contentWidth;
		
		elmCache["content"].style[pos] = -dim - mtDropDown.shadowSize + "px";
		elmCache["clip"].style.visibility = "hidden";
		
		if (ua.indexOf("mac") == -1 || ua.indexOf("gecko") > -1) 
		{	
			elmCache["background"].style.width = ow + "px";
			elmCache["background"].style.height = oh + "px";
			elmCache["background"].style.backgroundColor = mtDropDown.backgroundColor;
			
			if (mtDropDown.shadowSize != 0)
			{
				elmCache["shadowRight"].style.left = ow + "px";
				elmCache["shadowRight"].style.height = oh - (mtDropDown.shadowOffset - mtDropDown.shadowSize) + "px";
				elmCache["shadowRight"].style.backgroundColor = mtDropDown.shadowColor;
				
				elmCache["shadowBottom"].style.top = oh + "px";
				elmCache["shadowBottom"].style.width = ow - mtDropDown.shadowOffset + "px";
				elmCache["shadowBottom"].style.backgroundColor = mtDropDown.shadowColor;
			}
		}
		else 
		{
			elmCache["background"].firstChild.src = mtDropDown.backgroundPng;
			elmCache["background"].firstChild.width = ow;
			elmCache["background"].firstChild.height = oh;
			
			if (mtDropDown.shadowSize != 0)
			{
				elmCache["shadowRight"].firstChild.src = mtDropDown.shadowPng;
				elmCache["shadowRight"].style.left = ow + "px";
				elmCache["shadowRight"].firstChild.width = mtDropDown.shadowSize;
				elmCache["shadowRight"].firstChild.height = oh - (mtDropDown.shadowOffset - mtDropDown.shadowSize);
			
				elmCache["shadowBottom"].firstChild.src = mtDropDown.shadowPng;
				elmCache["shadowBottom"].style.top = oh + "px";
				elmCache["shadowBottom"].firstChild.height = mtDropDown.shadowSize;
				elmCache["shadowBottom"].firstChild.width = ow - mtDropDown.shadowOffset;
			}
		}
	}
	
	function initCache() 
	{
		var menu = document.getElementById(id);
		var all = menu.all ? menu.all : menu.getElementsByTagName("*"); 
		elmCache = {};
		elmCache["clip"] = menu;
		elmCache["item"] = [];
		for (var i = 0, elm = null; elm = all[i]; i++) 
		{
			switch (elm.className) 
			{
				case "items":
				case "content":
				case "background":
				case "shadowRight":
				case "shadowBottom":
					elmCache[elm.className] = elm;
					break;
				case "item":
				case "seperator":
					elm._index = elmCache["item"].length;
					elmCache["item"][elm._index] = elm;
					break;
			}
		}
	
		_this.elmCache = elmCache;
	}
	
	function initEvents() 
	{
	
		for (var i = 0, item = null; item = elmCache.item[i]; i++) {
		item.onmouseover = item_mouseover;
		item.onmouseout = item_mouseout;
		item.onclick = item_click;
		}
		
		if (typeof oActuator.tagName != "undefined") 
		{
			oActuator.onmouseover = actuator_mouseover;
			oActuator.onmouseout = actuator_mouseout;
		}
		
		elmCache["content"].onmouseover = content_mouseover;
		elmCache["content"].onmouseout = content_mouseout;
	}
	
	function highlight(oRow) 
	{
		actuatorRollOn(oActuator);
		if ( oRow.className.indexOf("_hover") == -1 )
		{
			oRow.className = oRow.className + "_hover";
			if (oRow.childNodes)
			{
				for(var i=0; i < oRow.childNodes.length; i++)
				{
					if ( oRow.childNodes[i].className != "" )
					{
						oRow.childNodes[i].className =  oRow.childNodes[i].className + "_hover";
					}
				}
			}
			if (childMenus[oRow._index]) 
			oRow.lastChild.firstChild.src = mtDropDown.dingbatOn;
		}
	}
	function dehighlight(oRow) 
	{
		if ( oRow.className.indexOf("_hover") > -1 )
		{
			var classArray = oRow.className.split("_");
			oRow.className = classArray[0];
			// change the first level childrens classes as well 
			// for example if there are hrefs inside a td that is the actuator
			if (oRow.childNodes)
			{
				for(var i=0; i < oRow.childNodes.length; i++)
				{
					if ( oRow.childNodes[i].className != "" )
					{
						classArray = oRow.childNodes[i].className.split("_");
						oRow.childNodes[i].className = classArray[0];
					}
				}
			}
			if (childMenus[oRow._index]) 
			oRow.lastChild.firstChild.src = mtDropDown.dingbatOff;
		}
	}
	
	function item_mouseover() 
	{
		if (!animating) 
		{
			highlight(this);
			if (childMenus[this._index])
			childMenuSet.showMenu(childMenus[this._index]);
			else if (childMenuSet) childMenuSet.hide();
		}
	}
	
	function item_mouseout() 
	{
		if (!animating) 
		{
			if (childMenus[this._index])
			childMenuSet.hideMenu(childMenus[this._index]);
			else 
			dehighlight(this);
		}
	}
	
	function item_click() 
	{
		if (!animating) 
		{
			if (_this.items[this._index].url) 
			location.href = _this.items[this._index].url;
		}
	}
	
	function actuator_mouseover() 
	{
		actuatorRollOn(oActuator);
		parentMenuSet.showMenu(_this);
	}
	
	function actuator_mouseout() 
	{
		actuatorRollOff(oActuator);
		parentMenuSet.hideMenu(_this);
	}
	
	function content_mouseover() 
	{
		if (!animating) 
		{
			actuatorRollOn(oActuator); // keep the actuator highlighted
			parentMenuSet.showMenu(_this);
			_this.onmouseover();
		}
	}
	
	function content_mouseout() 
	{
		if (!animating) 
		{
			parentMenuSet.hideMenu(_this);
			actuatorRollOff(oActuator); // dehighlight the actuator
		}
	}
	
	function child_mouseover() 
	{
		if (!animating) 
		{
			actuatorRollOn(oActuator); // keep the actuator highlighted
			parentMenuSet.showMenu(_this);
		}
	}
	
	function child_deactivate() 
	{
		for (var i = 0; i < childMenus.length; i++) 
		{
			if (childMenus[i] == this) 
			{
				dehighlight(elmCache["item"][i]);
				break;
			}
		}
		actuatorRollOff(oActuator); // keep the actuator highlighted
	}
	
	function child_queue() 
	{
		parentMenuSet.hideMenu(_this);
	}
	
	function toString() 
	{
		var aHtml = [];
		var sClassName = "mtDropdownMenu" + (oActuator.constructor != mtDropDownItem ? " top" : "");
		var startingCode = "" + (oActuator.constructor != mtDropDownItem ? mtDropDown.startCode : "");
		for (var i = 0, item = null; item = this.items[i]; i++) 
		{
			aHtml[i] = item.toString(childMenus[i]);
		}
		var returnStr = '<div id="' + id + '" class="' + sClassName + '">' + 
		'<div class="content"><table class="items" cellpadding="0" cellspacing="0" border="0" width="' + mtDropDown.menuWidth + '">' + startingCode + 
		'<tr><td colspan="2"><img src="' + mtDropDown.spacerGif + '" width="1" height="' + mtDropDown.menuPadding + '"></td></tr>' + 
		aHtml.join('') + 
		'<tr><td colspan="2"><img src="' + mtDropDown.spacerGif + '" width="1" height="' + mtDropDown.menuPadding + '"></td></tr></table>';
		if (mtDropDown.shadowSize != 0)
		{
			returnStr = returnStr + '<div class="shadowBottom"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
		'<div class="shadowRight"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>';
		}
		
		returnStr = returnStr + '<div class="background"><img src="' + mtDropDown.spacerGif + '" width="1" height="1"></div>' + 
		'</div></div>';
		return returnStr;
	}


}

mtDropDownSet.registry = [];

function mtDropDownSet(iDirection, iLeft, iTop, iReferencePoint) 
{

	this.addMenu = addMenu;
	this.showMenu = showMenu;
	this.hideMenu = hideMenu;
	this.hide = hide;
	
	var menus = [];
	var _this = this;
	var current = null;
	this.index = mtDropDownSet.registry.length;
	mtDropDownSet.registry[this.index] = this;
	
	function addMenu(oActuator) 
	{
		var m = new mtDropDown(oActuator, iDirection, iLeft, iTop, iReferencePoint, this);
		menus[menus.length] = m;
		return m;
	}

	function showMenu(oMenu) 
	{
		if (oMenu != current) 
		{
			if (current != null) hide(current); 
	
			current = oMenu;
	
			oMenu.show();
		}
		else 
		{	
			cancelHide(oMenu);
		}
	}
	
	function hideMenu(oMenu) 
	{
	
		if (current == oMenu && oMenu.isOpen) 
		{
			if (!oMenu.hideTimer) scheduleHide(oMenu);
		}
	}
	
	function scheduleHide(oMenu) 
	{
		oMenu.onqueue();
		oMenu.hideTimer = window.setTimeout("mtDropDownSet.registry[" + _this.index + "].hide(mtDropDown.registry[" + oMenu.index + "])", mtDropDown.hideDelay);
	}

	function cancelHide(oMenu) 
	{	
		if (oMenu.hideTimer) 
		{
			window.clearTimeout(oMenu.hideTimer);
			oMenu.hideTimer = null;
		}
	}
	
	function hide(oMenu) 
	{ 
		if (!oMenu && current) oMenu = current;
		if (oMenu && current == oMenu && oMenu.isOpen) 
		{
			cancelHide(oMenu);
			current = null;
			oMenu.hideTimer = null;
			oMenu.hide();
		}
	}
}

function mtDropDownItem(sText, sUrl, sStyleNum, oParent) 
{
	this.toString = toString;
	this.text = sText;
	this.url = sUrl;
	this.stylenum = sStyleNum;
	this.parentMenu = oParent;
	
	function toString(bDingbat) 
	{
		var sDingbat = bDingbat ? mtDropDown.dingbatOff : mtDropDown.spacerGif;
		var iEdgePadding = mtDropDown.itemPadding + mtDropDown.menuPadding;
		var sPaddingLeft = "padding:" + mtDropDown.itemPadding + "px; padding-left:" + iEdgePadding + "px;"
		var sPaddingRight = "padding:" + mtDropDown.itemPadding + "px; padding-right:" + iEdgePadding + "px;"
		var widthStyle = "";
		return '<tr class="item"><td nowrap style="' + sPaddingLeft + '" class="itemtext' + sStyleNum + '">' + sText + '</td><td width="14" style="' + sPaddingRight + '" class="itemtext' + sStyleNum + '">' + '<img src="' + sDingbat + '" width="14" height="14"></td></tr>';
	}
}


function mtDropDownSeperator(oParent) 
{
	this.toString = toString;
	this.parentMenu = oParent;
	
	function toString(bDingbat) // do not require the parameter but just passed to conform with the mtDropDownItem toString method call
	{
		return '<tr class="seperator"><td colspan="2" background="' + mtDropDown.seperator + '"><img src="images/spacer.gif" width="1" height="' + mtDropDown.seperatorHeight + '"></td></tr>';
	}
}


function Accelimation(from, to, time, zip) 
{
	if (typeof zip == "undefined") zip = 0;
	if (typeof unit == "undefined") unit = "px";
	this.x0 = from;
	this.x1 = to;
	this.dt = time;
	this.zip = -zip;
	this.unit = unit;
	this.timer = null;
	this.onend = new Function();
	this.onframe = new Function();
}


Accelimation.prototype.start = function() 
{
	this.t0 = new Date().getTime();
	this.t1 = this.t0 + this.dt;
	var dx = this.x1 - this.x0;
	this.c1 = this.x0 + ((1 + this.zip) * dx / 3);
	this.c2 = this.x0 + ((2 + this.zip) * dx / 3);
	Accelimation._add(this);
}

Accelimation.prototype.stop = function() 
{
	Accelimation._remove(this);
}

Accelimation.prototype._paint = function(time) 
{
	if (time < this.t1) 
	{
		var elapsed = time - this.t0;
		this.onframe(Accelimation._getBezier(elapsed/this.dt,this.x0,this.x1,this.c1,this.c2));
	}
	else this._end();
}
	
Accelimation.prototype._end = function() 
{
	Accelimation._remove(this);
	this.onframe(this.x1);
	this.onend();
}

Accelimation._add = function(o) 
{
	var index = this.instances.length;
	this.instances[index] = o;
	
	if (this.instances.length == 1) 
	{
		this.timerID = window.setInterval("Accelimation._paintAll()", this.targetRes);
	}
}

Accelimation._remove = function(o) 
{
	for (var i = 0; i < this.instances.length; i++) 
	{
		if (o == this.instances[i]) 
		{
			this.instances = this.instances.slice(0,i).concat( this.instances.slice(i+1) );
			break;
		}
	}

	if (this.instances.length == 0) 
	{
		window.clearInterval(this.timerID);
		this.timerID = null;
	}
}

Accelimation._paintAll = function() 
{
	var now = new Date().getTime();
	for (var i = 0; i < this.instances.length; i++) 
	{
		this.instances[i]._paint(now);
	}
}

Accelimation._B1 = function(t) { return t*t*t }
Accelimation._B2 = function(t) { return 3*t*t*(1-t) }
Accelimation._B3 = function(t) { return 3*t*(1-t)*(1-t) }
Accelimation._B4 = function(t) { return (1-t)*(1-t)*(1-t) }

Accelimation._getBezier = function(percent,startPos,endPos,control1,control2) 
{
	return endPos * this._B1(percent) + control2 * this._B2(percent) + control1 * this._B3(percent) + startPos * this._B4(percent);
}

Accelimation.instances = [];
Accelimation.targetRes = 10;
Accelimation.timerID = null;

// function to change the classes of the object that called the drop down menu into being - to show mouseover hilighting
// if the object has an class then it will be swapped out to its _hover version 
function actuatorRollOn(theActuator)
{
	if (highlightActuator)
	{
		// only swap (hilite) if the object has a class
		if (theActuator.className && (theActuator.className != ""))
		{
			// only do if not already highlighted
			if ( theActuator.className.indexOf("_hover") == -1 )
			{
				theActuator.className = theActuator.className + "_hover";
				if (theActuator.childNodes)
				{
					// change the first level childrens classes as well 
					// for example if there are hrefs inside a td that is the actuator
					for(var i=0; i < theActuator.childNodes.length; i++)
					{
						if ( theActuator.childNodes[i].className != "" )
						{
							theActuator.childNodes[i].className =  theActuator.childNodes[i].className + "_hover";
						}
					}
				}
			}
		}
	}
}

// function to change the classes of the object that called the drop down menu into being - to show mouseover dehilighting
// if the object has an class then it will be swapped back to its non _hover version 
function actuatorRollOff(theActuator)
{
	if (highlightActuator)
	{
		if (theActuator.className && (theActuator.className != ""))
		{
			if ( theActuator.className.indexOf("_hover") > -1 )
			{
				var classArray = theActuator.className.split("_");
				theActuator.className = classArray[0];
				if (theActuator.childNodes)
				{
					// change the first level childrens classes as well 
					// for example if there are hrefs inside a td that is the actuator
					for(var i=0; i < theActuator.childNodes.length; i++)
					{
						if ( theActuator.childNodes[i].className != "" )
						{
							classArray = theActuator.childNodes[i].className.split("_");
							theActuator.childNodes[i].className = classArray[0];
						}
					}
				}
			}
		}
	}
}