Menu.spacerGif = "http://laredobroncos.com/images/spacer.gif";
Menu.dingbatOn = "http://laredobroncos.com/images/submenu-on.gif";
Menu.dingbatOff = "http://laredobroncos.com/images/submenu-off.gif";
Menu.dingbatSize = 14;
Menu.menuPadding = 5;
Menu.itemPadding = 3;
Menu.shadowSize = 2;
Menu.shadowOffset = 3;
Menu.shadowColor = "#888";
Menu.shadowPng = "http://laredobroncos.com/images/grey-40.png";
Menu.backgroundColor = "#4D4D4D";
Menu.backgroundPng = "http://laredobroncos.com/images/white-90.png";
Menu.hideDelay = 1000;
Menu.slideTime = 400;

Menu.reference = {topLeft:1, topRight:2, bottomLeft:3, bottomRight:4};
Menu.direction = {down:1, right:2};
Menu.registry = [];
Menu._maxZ = 100;


Menu.isSuported = function() {
	var ua = navigator.userAgent.toLowerCase();
	var pf = navigator.platform.toLowerCase();
	var an = navigator.appName;
	var r = false;

	if (ua.indexOf("gecko") > -1 && navigator.productSub >= 20020605) {
		r = true; // gecko >= moz 1.0
	} else if (an == "Microsoft Internet Explorer") {
		if (document.getElementById) { // ie5.1+ mac,win
			if (pf.indexOf("mac") == 0) {
				r = /msie (\d(.\d*)?)/.test(ua) && Number(RegExp.$1) >= 5.1;
			} else {
				r = true;
			}
		}
	} else if (ua.indexOf("opera") > -1) {
		r = true;
	}
	return r;
}

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

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

function Menu(iObj, iDirection, iLeft, iTop, iReference, iParentSet) {
	this.addItem = addItem;
	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.ondequeue = new Function();

	this.index = Menu.registry.length;
	Menu.registry[this.index] = this;

	var id = "Menu"+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 == Menu.direction.down ? 'top' : 'left';
	var dim = null;

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

	function addMenu(oMenuItem) {
		if (!oMenuItem.parentMenu == this) {
			throw new Error("Cannot add a menu here");
		}
		if (childMenuSet == null) {
			childMenuSet = new MenuSet(Menu.direction.right, -5, 2, Menu.reference.topRight);
		}
		var m = childMenuSet.addMenu(oMenuItem);
		childMenus[oMenuItem._index] = m;
		m.onmouseover = child_mouseover;
		m.ondeactivate = child_deactivate;
		m.onqueue = child_queue;
		m.ondequeue = child_dequeue;
		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 = Menu._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 = iObj.constructor == MenuItem;
		var act = sub ? iObj.parentMenu.elmCache["item"][iObj._index] : iObj;
		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("Menu") == -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 (iObj.constructor == MenuItem) {
			x += parseInt(el.parentNode.style.left);
			y += parseInt(el.parentNode.style.top);
		}
		switch (iReference) {
			case Menu.reference.topLeft:
				break;
			case Menu.reference.topRight:
				x += act.offsetWidth;
				break;
			case Menu.reference.bottomLeft:
				y += act.offsetHeight;
				break;
			case Menu.reference.bottomRight:
				x += act.offsetWidth;
				y += act.offsetHeight;
				break;
		}
		
		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";
		//alert (elmCache['clip'].style.top);
	}

	function slideStart() {
		//alert (parseInt(elmCache["content"].style[pos]));
		var x0 = parseInt(elmCache["content"].style[pos]);
		var x1 = _this.isOpen ? 0 : -dim;
		//alert(x0+' '+x1);
		
		if (a != null) {
			a.stop();
		}
		//function Accelimation(from, to, time, zip) {
		//alert (x0);
		a = new Accelimation(x0, x1, Menu.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 + Menu.shadowSize + 2 + "px";
		elmCache["clip"].style.height = oh + Menu.shadowSize + 2 + "px";

		elmCache["content"].style.width = ow + Menu.shadowSize + "px";
		elmCache["content"].style.height = oh + Menu.shadowSize + "px";

		contentHeight = oh + Menu.shadowSize;
		contentWidth = ow + Menu.shadowSize;

		dim = iDirection == Menu.direction.down ? contentHeight : contentWidth;

		elmCache["content"].style[pos] = -dim - Menu.shadowSize + "px";
		//alert(elmCache["content"].style[pos])
		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 = Menu.backgroundColor;

			elmCache["shadowRight"].style.left = ow + "px";
			elmCache["shadowRight"].style.height = oh - (Menu.shadowOffset - Menu.shadowSize) + "px";
			elmCache["shadowRight"].style.backgroundColor = Menu.shadowColor;

			elmCache["shadowBottom"].style.top = oh + "px";
			elmCache["shadowBottom"].style.width = ow - Menu.shadowOffset + "px";
			elmCache["shadowBottom"].style.backgroundColor = Menu.shadowColor;
		} else {
			elmCache["background"].firstChild.src = Menu.backgroundPng;
			elmCache["background"].firstChild.width = ow;
			elmCache["background"].firstChild.height = oh;
			elmCache["shadowRight"].firstChild.src = Menu.shadowPng;
			elmCache["shadowRight"].style.left = ow + "px";
			elmCache["shadowRight"].firstchild.width = Menu.shadowSize;
			elmCache["shadowRight"].firstChild.height = oh - (Menu.shadowOffset - Menu.shadowSize);
			elmCache["shadowBottom"].firstChild.src = Menu.shadowPng;
			elmCache["shadowBottom"].style.left = oh + "px";
			elmCache["shadowBottom"].firstChild.height = Menu.shadowSize;
			elmCache["shadowBottom"].firstChild.width = ow - Menu.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 "content":
				case "items":
				case "background":
				case "shadowRight":
				case "shadowBottom":
					elmCache[elm.className] = elm;
					break;
				case "item":
					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 iObj.tagName != "undefined") {
			iObj.onmouseover = obj_mouseover;
			iObj.onmouseout = obj_mouseout;
		}

		elmCache["content"].onmouseover = content_mouseover;
		elmCache["content"].onmouseout = content_mouseout;
	}
	
	function highlight(oRow) {
		oRow.className = "item hover";
		if (childMenus[oRow._index]) {
			oRow.lastChild.firstChild.src = Menu.dingbatOn;
		}
	}

	function dehighlight(oRow) {
		oRow.className = "item";
		if (childMenus[oRow._index]) {
			oRow.lastChild.firstChild.src = Menu.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 obj_mouseover() {
		iParentSet.showMenu(_this);
	}

	function obj_mouseout() {
		iParentSet.hideMenu(_this);
	}

	function content_mouseover() {
		if (!animating) {
			iParentSet.showMenu(_this);
			_this.onmouseover();
		}
	}

	function content_mouseout() {
		if (!animating) {
			iParentSet.hideMenu(_this);
		}
	}
	
	function child_mouseover() {
		if (!animating) {
			iParentSet.showMenu(_this);
		}
	}

	function child_deactivate() {
		for (var i = 0; i < childMenus.length; i++) {
			if (childMenus[i] == this) {
				dehighlight(elmCache["item"][i]);
				break;
			}
		}
	}

	function child_queue() {
		iParentSet.hideMenu(_this);
	}

	function child_dequeue() {
		iParentSet.showMenu(_this);
	}

	function toString() {
		var Html = [];
		var sClassName = "Menu" + (iObj.constructor != MenuItem ? " top" : "");
		for (var i = 0, item = null; item = this.items[i]; i++) {
			Html[i] = item.toString(childMenus[i]);
		}
		return '<div id="'+id+'" class="'+sClassName+'">'+
					'<div class="content">'+
						'<table class="items" cellpadding="0" cellspacing="0" border="0">'+
							'<tr><td colspan="2" style="padding:0;font-size:0;margin:0;padding:'+Menu.menuPadding+'px 0 0;"></td></tr>' + 
							Html.join('')+
							'<tr><td colspan="2" style="padding:0;font-size:0;margin:0;padding:'+Menu.menuPadding+'px 0 0;"></td></tr></table>' + 
						'</table>'+
						'<div class="shadowBottom"><img src="' + Menu.spacerGif + '" width="1" height="1"></div>'+
						'<div class="shadowRight"><img src="' + Menu.spacerGif + '" width="1" height="1"></div>'+
						'<div class="background"><img src="' + Menu.spacerGif + '" width="1" height="1"></div>'+
					'</div>'+
				'</div>';
	}
		
}

MenuSet.registry = [];

function MenuSet(iDirection, iLeft, iTop, iReference) {
	this.addMenu = addMenu;
	this.showMenu = showMenu;
	this.hideMenu = hideMenu;
	this.hide = hide;
	this.hideCurrent = hideCurrent;

	var menus = [];
	var _this = this;
	var current = null;

	this.index = MenuSet.registry.length;
	MenuSet.registry[this.index] = this;

	function addMenu(iObj) {
		var m = new Menu(iObj, iDirection, iLeft, iTop, iReference, 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("MenuSet.registry[" + _this.index + "].hide(Menu.registry["+oMenu.index+"])", Menu.hideDelay);
	}

	function cancelHide(oMenu) {
		if (oMenu.hideTimer) {
			oMenu.ondequeue();
			window.clearTimeout(oMenu.hideTimer);
			oMenu.hideTimer = null;
		}
	}

	function hide(oMenu) {
		if (!oMenu && current) {
			oMenu = current;
		}
		if (oMenu && current == oMenu && oMenu.isOpen) {
			hideCurrent();
		}
	}

	function hideCurrent() {
		if (null != current) {
			cancelHide(current);
			current.hideTimer = null;
			current.hide();
			current = null;
		}
	}

}

function MenuItem(sName, sUrl, sParent) {
	this.toString = toString;
	this.text = sName;
	this.url = sUrl;
	this.parentMenu = sParent;
	function toString(bDingbat) {
		var sDingbat = bDingbat ? Menu.dingbatOff : Menu.spacerGif;
		var iEdgePadding = Menu.itemPadding + Menu.menuPadding;
		var sPaddingLeft = "padding:" + Menu.itemPadding + "px; padding-left:" + iEdgePadding + "px;"
		var sPaddingRight = "padding:" + Menu.itemPadding + "px; padding-right:" + iEdgePadding + "px;"
		return '<tr class="item">'+
			'<td nowrap style="'+sPaddingLeft+'" style="font-weight:bold;">'+
					sName+
			'</td>'+
			'<td style="width:14px;'+sPaddingRight+'">'+
				//'<img src="'+sDingbat+'" style="width:14px;height:14px;" />'+
				'&nbsp;'+
			'</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) {
	//alert (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;

if (window.attachEvent) {
	var clearElementProps = [
		'data',
		'onmouseover',
		'onmouseout',
		'onmousedown',
		'onmouseup',
		'ondblclick',
		'onclick',
		'onselectstart',
		'oncontextmenu'
	];

	window.attachEvent("onunload" , function() {
		var el;
		for (var d = document.all.length; d--;) {
			el = document.all[d];
			for (var c = clearElementProps.length;c--;) {
				el[clearElementProps[c]] = null;
			}
		}
	});
}
/*
Based off of TransMenu found at http://youngpup.net/2004/transmenus
*/