lehrerDropDown.spacerGif = "../images/x.gif"; 
lehrerDropDown.dingbatOn = "images/expand-1.gif"; 
lehrerDropDown.dingbatOff = "images/expand-0.gif"; 
lehrerDropDown.dingbatSize = 14; 
lehrerDropDown.menuPadding = 1; 
lehrerDropDown.itemPadding = 4; 
lehrerDropDown.shadowSize = 2; 
lehrerDropDown.shadowOffset = 3; 
lehrerDropDown.shadowColor = "#888"; 
lehrerDropDown.shadowPng = "images/grey-40.png"; 
lehrerDropDown.backgroundColor = "#FFFFFF"; 
lehrerDropDown.backgroundPng = "images/white-90.png"; 
lehrerDropDown.hideDelay = 150; 
lehrerDropDown.slideTime = 300; 



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




lehrerDropDown.isSupported = function() {
if (typeof lehrerDropDown.isSupported.r == "boolean") 
return lehrerDropDown.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; 
}
lehrerDropDown.isSupported.r = r;
return r;
}

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

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

function lehrerDropDown(oActuator, iDirection, iLeft, iTop, iReferencePoint, parentMenuSet) {

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.index = lehrerDropDown.registry.length;
lehrerDropDown.registry[this.index] = this;
var id = "lehrerDropDown" + 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 == lehrerDropDown.direction.down ? "top" : "left";
var dim = null;

function addItem(sText, sUrl) {
var item = new lehrerDropDownItem(sText, sUrl, 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 lehrerDropDownSet(lehrerDropDown.direction.right, -5, 2, lehrerDropDown.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 = lehrerDropDown._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 == lehrerDropDownItem; 
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("lehrerDropDownMenu") == -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 == lehrerDropDownItem) {
x += parseInt(el.parentNode.style.left);
y += parseInt(el.parentNode.style.top);
}
switch (iReferencePoint) {
case lehrerDropDown.reference.topLeft:
break;
case lehrerDropDown.reference.topRight:
x += act.offsetWidth;
break;
case lehrerDropDown.reference.bottomLeft:
y += act.offsetHeight;
break;
case lehrerDropDown.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";
}
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, lehrerDropDown.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 + lehrerDropDown.shadowSize + 2 + "px";
elmCache["clip"].style.height = oh + lehrerDropDown.shadowSize + 2 + "px";

elmCache["content"].style.width = ow + lehrerDropDown.shadowSize + "px";
elmCache["content"].style.height = oh + lehrerDropDown.shadowSize + "px";
contentHeight = oh + lehrerDropDown.shadowSize;
contentWidth = ow + lehrerDropDown.shadowSize;
dim = iDirection == lehrerDropDown.direction.down ? contentHeight : contentWidth;

elmCache["content"].style[pos] = -dim - lehrerDropDown.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 = lehrerDropDown.backgroundColor;

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



elmCache["shadowBottom"].style.top = oh + "px";
elmCache["shadowBottom"].style.width = ow - lehrerDropDown.shadowOffset + "px";
elmCache["shadowBottom"].style.backgroundColor = lehrerDropDown.shadowColor;
}

else {

elmCache["background"].firstChild.src = lehrerDropDown.backgroundPng;
elmCache["background"].firstChild.width = ow;
elmCache["background"].firstChild.height = oh;

elmCache["shadowRight"].firstChild.src = lehrerDropDown.shadowPng;
elmCache["shadowRight"].style.left = ow + "px";
elmCache["shadowRight"].firstChild.width = lehrerDropDown.shadowSize;
elmCache["shadowRight"].firstChild.height = oh - (lehrerDropDown.shadowOffset - lehrerDropDown.shadowSize);



elmCache["shadowBottom"].firstChild.src = lehrerDropDown.shadowPng;
elmCache["shadowBottom"].style.top = oh + "px";
elmCache["shadowBottom"].firstChild.height = lehrerDropDown.shadowSize;
elmCache["shadowBottom"].firstChild.width = ow - lehrerDropDown.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":
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) {
oRow.className = "item hover";
if (childMenus[oRow._index]) 
oRow.lastChild.firstChild.src = lehrerDropDown.dingbatOn;
}
function dehighlight(oRow) {
oRow.className = "item";
if (childMenus[oRow._index]) 
oRow.lastChild.firstChild.src = lehrerDropDown.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() {
parentMenuSet.showMenu(_this);
}
function actuator_mouseout() {
parentMenuSet.hideMenu(_this);
}
function content_mouseover() {
if (!animating) {
parentMenuSet.showMenu(_this);
_this.onmouseover();
}
}
function content_mouseout() {
if (!animating) {
parentMenuSet.hideMenu(_this);
}
}
function child_mouseover() {
if (!animating) {
parentMenuSet.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() {
parentMenuSet.hideMenu(_this);
}
function toString() {
var aHtml = [];
var sClassName = "lehrerDropDownMenu" + (oActuator.constructor != lehrerDropDownItem ? " top" : "");
for (var i = 0, item = null; item = this.items[i]; i++) {
aHtml[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"><img src="' + lehrerDropDown.spacerGif + '" width="1" height="' + lehrerDropDown.menuPadding + '"></td></tr>' + 
aHtml.join('') + 
'<tr><td colspan="2"><img src="' + lehrerDropDown.spacerGif + '" width="1" height="' + lehrerDropDown.menuPadding + '"></td></tr></table>' + 
'<div class="shadowBottom"><img src="' + lehrerDropDown.spacerGif + '" width="1" height="1"></div>' + 
'<div class="shadowRight"><img src="' + lehrerDropDown.spacerGif + '" width="1" height="1"></div>' + 
'<div class="background"><img src="' + lehrerDropDown.spacerGif + '" width="1" height="1"></div>' + 
'</div></div>';
}
}








lehrerDropDownSet.registry = [];
function lehrerDropDownSet(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 = lehrerDropDownSet.registry.length;
lehrerDropDownSet.registry[this.index] = this;

function addMenu(oActuator) {
var m = new lehrerDropDown(oActuator, iDirection, iLeft, iTop, iReferencePoint, this);
menus[menus.length] = m;
return m;
}
function showMenu(oMenu) {
if (oMenu != current) {

if (c