var height = 516;
var width = 730;
var backgroundDiv = null;
var popupDiv = null;
function showPopup(url)
{
	customWindow(url,'presentation',540,750);
	return;
	if( document.getElementById('divFlashWriter') )
	{
		backgroundDiv.style.display = 'block';
	}
	else
	{
		backgroundDiv = document.createElement('DIV');	
		backgroundDiv.id = 'divFlashWriter';
		backgroundDiv.onclick = hidePopup;
		backgroundDiv.style.height = document.documentElement.clientHeight+'px';
		backgroundDiv.style.width = document.documentElement.clientWidth+'px';
		backgroundDiv.style.left = '0px';
		backgroundDiv.style.position = 'absolute';
		backgroundDiv.style.margin = '0';
		backgroundDiv.style.padding = '0';
		backgroundDiv.style.backgroundColor = 'black';
		backgroundDiv.style.filter = 'alpha(opacity=50)';
		backgroundDiv.style.opacity = '0.5';
		backgroundDiv.style.zIndex = 998;
		backgroundDiv.style.display = 'block';
		backgroundDiv.style.cursor = 'pointer';
		document.body.appendChild(backgroundDiv);
	}

	backgroundDiv.style.top = Math.max(document.body.scrollTop,document.documentElement.scrollTop)+'px';


	if( document.getElementById('divWindowPopup') )
	{
		popupDiv.style.display = 'block';
	}
	else
	{
		popupDiv = document.createElement('IFRAME');
		popupDiv.src = url;
		popupDiv.id = 'divWindowPopup';
		popupDiv.style.top = '0px';
		popupDiv.scrolling = 'no';
		popupDiv.style.backgroundColor = '#FFF';
		popupDiv.style.left = '0px';
		popupDiv.style.position = 'absolute';
		popupDiv.style.display = 'block';
		popupDiv.style.border = '0px solid black';
		popupDiv.style.frameBorder = '0';
		popupDiv.style.zIndex = 999;
		document.body.appendChild(popupDiv);
		


	}
	popupDiv.style.height = '540px';
	popupDiv.style.width = '750px';
	positionPopup();
}
function hidePopup()
{
	document.getElementById('divFlashWriter').style.display = 'none';
	document.getElementById('divWindowPopup').style.display = 'none';
	//if(iframeObj)iframeObj.style.display='none';
}
var fudgeFactor = {top:-1, left:-1};
function positionPopup()
{
	centerIt(document.getElementById('divWindowPopup'));
	centerIt(document.getElementById('divFlashWriter'));
}
function centerIt(obj)
{
	if( obj )
	{
		// set fudgeFactor values only first time
		if (fudgeFactor.top == -1) 
		{
			if ((typeof obj.offsetTop == "number") && obj.offsetTop > 0) {
				fudgeFactor.top = obj.offsetTop;
				fudgeFactor.left = obj.offsetLeft;
			} else {
				fudgeFactor.top = 0;
				fudgeFactor.left = 0;
			}
			if (obj.offsetWidth && obj.scrollWidth) {
				if (obj.offsetWidth != obj.scrollWidth) {
					obj.style.width = obj.scrollWidth;    
				}
			}
		}

		var x = Math.round((getInsideWindowWidth()/2) - (getObjectWidth(obj)/2));
		var y = Math.round((getInsideWindowHeight()/2) - (getObjectHeight(obj)/2));
		shiftTo(obj, x - fudgeFactor.left, y - fudgeFactor.top+Math.max(document.body.scrollTop,document.documentElement.scrollTop));
	}
}
window.onscroll = positionPopup;
document.documentElement.onscroll = positionPopup;


function beginContent (user, partialResults) {

}

function endContent (time, completed, timedOut) {

}

function beginQuestion (questionid) {

}

function endQuestion (questionid, correct, points, attempts, time, timedOut) {

}

function addAnswer (questionid, choiceid, answerid, correct) {

}


/* Simple AJAX Code-Kit (SACK) v1.5 */
/* ©2005 Gregory Wild-Smith */
/* www.twilightuniverse.com */
/* Software licenced under a modified X11 licence,
   see documentation or authors website for more details */

function KeySack(file){
	this.xmlhttp = null;
	this.AjaxFailedAlert = "Your browser does not support the enhanced functionality of this website, and therefore you will have an experience that differs from the intended one.\n";
	
	this.resetData = function() {
		this.method = "POST";
  		this.URLString = "";
  		this.encodeURIString = true;
  		this.execute = false;
  		this.element = null;
		this.elementObj = null;
		this.requestFile = file;
		this.vars = new Object();
		this.responseStatus = new Array(2);
  	}
	
	this.resetFunctions = function() {
  		this.onLoading = function() { };
  		this.onLoaded = function() { };
  		this.onInteractive = function() { };
  		this.onCompletion = function() { };
  		this.onError = function() { };
	}
	
	this.reset = function() {
		this.resetFunctions();
		this.resetData();
	}
	
	this.reset(); /* setup defaults, using the same method that could reset them later. */
	
	this.createAJAX = function() {
		try {
			this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (err) {
				this.xmlhttp = null;
			}
		}
		if(!this.xmlhttp && typeof XMLHttpRequest != "undefined")
			this.xmlhttp = new XMLHttpRequest();
		if (!this.xmlhttp){
			this.failed = true; 
		}
	};

	this.setVar = function(name, value){
		this.vars[name] = Array(value, false);
	}
	
	this.encVar = function(name, value, returnvars){
		if(true == returnvars){
			return Array(encodeURIComponent(name), encodeURIComponent(value));
		} else {
			this.vars[encodeURIComponent(name)] = Array(encodeURIComponent(value), true);
		}
	}
	
	this.processURLString = function(string, encode){
		varArray = string.split('&');
		for (i = 0; i < varArray.length; i++){
			urlVars = varArray[i].split('=');
			if (urlVars[0].indexOf('amp;') != -1){
				urlVars[0] = urlVars[0].substring(4);
			}
			if (true == encode){
				this.encVar(urlVars[0],urlVars[1]);
			} else {
				this.setVar(urlVars[0],urlVars[1]);
			}
		}
	}
	
	this.createURLString = function(urlstring){ // near done! 
		var timeval = new Date().getTime();
		
		if (this.encodeURIString && this.URLString){
			this.processURLString(this.URLString, true);
		}
		if (urlstring){
			if (this.URLString.length){
				this.URLString = this.URLString + "&" + urlstring; 
			} else {
				this.URLString = urlstring; 
			}
		}

		this.setVar("rndval", timeval); //prevents caching of URLString.

		for (key in this.vars){ //First Loop: Vars are encoded if needed.
    			if (false == this.vars[key][1] && true == this.encodeURIString){
				var encoded = this.encVar(key, this.vars[key][0], true);
				delete this.vars[key];
				this.vars[encoded[0]] = Array(encoded[1], true);
    			}
		}
		var i = 0;
		for (key in this.vars){ //Second Loop: Creates URLString from vars.
			if (i != 0){
    				this.URLString += "&" + key + "=" + this.vars[key][0];
    			} else {
    				this.URLString += key + "=" + this.vars[key][0];
    			}
    			i++;
		}
	}
	
	this.runResponse = function(){
		eval(this.response);
	}
	
	this.runAJAX = function(urlstring){
		if(this.failed && this.AjaxFailedAlert){ 
			alert(this.AjaxFailedAlert); 
		} else {
			this.createURLString(urlstring);
			if (this.element) { this.elementObj = document.getElementById(this.element); }
			if (this.xmlhttp) {
				var self = this;
				if (this.method == "GET") {
					var totalurlstring = this.requestFile + "?" + this.URLString;
					this.xmlhttp.open(this.method, totalurlstring, true);
				} else {
					this.xmlhttp.open(this.method, this.requestFile, true);
				}
				if (this.method == "POST"){
  					try {
						this.xmlhttp.setRequestHeader('Content-Type','application/x-www-form-urlencoded')  
					} catch (e) {}
				}

				this.xmlhttp.onreadystatechange = function() {
					switch (self.xmlhttp.readyState){
						case 1:
							self.onLoading();
						break;
						case 2:
							self.onLoaded();
						break;
						case 3:
							self.onInteractive();
						break;
						case 4:
							self.response = self.xmlhttp.responseText;
							self.responseXML = self.xmlhttp.responseXML;
							self.responseStatus[0] = self.xmlhttp.status;
							self.responseStatus[1] = self.xmlhttp.statusText;
							if(self.execute){ self.runResponse(); }
							if (self.elementObj) {
								var elemNodeName = self.elementObj.nodeName;
								elemNodeName.toLowerCase();
								if (elemNodeName == "input" || elemNodeName == "select" || elemNodeName == "option" || elemNodeName == "textarea"){
									self.elementObj.value = self.response;
								} else {
									self.elementObj.innerHTML = self.response;
								}
							}
							if ("200" == self.responseStatus[0]){
								self.onCompletion();
							} else {
								self.onError();
							}
							self.URLString = "";
						break;
					}
				};
				this.xmlhttp.send(this.URLString);
			}
		}
	};
this.createAJAX();
}

/* ***********************************************************
Example 4-3 (DHTMLapi.js)
"Dynamic HTML:The Definitive Reference"
2nd Edition
by Danny Goodman
Published by O'Reilly & Associates  ISBN 1-56592-494-0
http://www.oreilly.com
Copyright 2002 Danny Goodman.  All Rights Reserved.
************************************************************ */
// DHTMLapi.js custom API for cross-platform
// object positioning by Danny Goodman (http://www.dannyg.com).
// Release 2.0. Supports NN4, IE, and W3C DOMs.

// Global variables
var isCSS, isW3C, isIE4, isNN4;
// initialize upon load to let all browsers establish content objects
function initDHTMLAPI() {
    if (document.images) {
        isCSS = (document.body && document.body.style) ? true : false;
        isW3C = (isCSS && document.getElementById) ? true : false;
        isIE4 = (isCSS && document.all) ? true : false;
        isNN4 = (document.layers) ? true : false;
        isIE6CSS = (document.compatMode && document.compatMode.indexOf("CSS1") >= 0) ? true : false;
    }
}
// set event handler to initialize API
window.onload = initDHTMLAPI;

// Seek nested NN4 layer from string name
function seekLayer(doc, name) {
    var theObj;
    for (var i = 0; i < doc.layers.length; i++) {
        if (doc.layers[i].name == name) {
            theObj = doc.layers[i];
            break;
        }
        // dive into nested layers if necessary
        if (doc.layers[i].document.layers.length > 0) {
            theObj = seekLayer(document.layers[i].document, name);
        }
    }
    return theObj;
}

// Convert object name string or object reference
// into a valid element object reference
function getRawObject(obj) {
    var theObj;
    if (typeof obj == "string") {
        if (isW3C) {
            theObj = document.getElementById(obj);
        } else if (isIE4) {
            theObj = document.all(obj);
        } else if (isNN4) {
            theObj = seekLayer(document, obj);
        }
    } else {
        // pass through object reference
        theObj = obj;
    }
    return theObj;
}

// Convert object name string or object reference
// into a valid style (or NN4 layer) reference
function getObject(obj) {
    var theObj = getRawObject(obj);
    if (theObj && isCSS) {
        theObj = theObj.style;
    }
    return theObj;
}

// Position an object at a specific pixel coordinate
function shiftTo(obj, x, y) {
    var theObj = getObject(obj);
    if (theObj) {
        if (isCSS) {
            // equalize incorrect numeric value type
            var units = (typeof theObj.left == "string") ? "px" : 0 
            theObj.left = x + units;
            theObj.top = y + units;
        } else if (isNN4) {
            theObj.moveTo(x,y)
        }
    }
}

// Move an object by x and/or y pixels
function shiftBy(obj, deltaX, deltaY) {
    var theObj = getObject(obj);
    if (theObj) {
        if (isCSS) {
            // equalize incorrect numeric value type
            var units = (typeof theObj.left == "string") ? "px" : 0 
            theObj.left = getObjectLeft(obj) + deltaX + units;
            theObj.top = getObjectTop(obj) + deltaY + units;
        } else if (isNN4) {
            theObj.moveBy(deltaX, deltaY);
        }
    }
}

// Set the z-order of an object
function setZIndex(obj, zOrder) {
    var theObj = getObject(obj);
    if (theObj) {
        theObj.zIndex = zOrder;
    }
}

// Set the background color of an object
function setBGColor(obj, color) {
    var theObj = getObject(obj);
    if (theObj) {
        if (isNN4) {
            theObj.bgColor = color;
        } else if (isCSS) {
            theObj.backgroundColor = color;
        }
    }
}

// Set the visibility of an object to visible
function show(obj) {
    var theObj = getObject(obj);
    if (theObj) {
        theObj.visibility = "visible";
    }
}

// Set the visibility of an object to hidden
function hide(obj) {
    var theObj = getObject(obj);
    if (theObj) {
        theObj.visibility = "hidden";
    }
}

// Retrieve the x coordinate of a positionable object
function getObjectLeft(obj)  {
    var elem = getRawObject(obj);
    var result = 0;
    if (document.defaultView) {
        var style = document.defaultView;
        var cssDecl = style.getComputedStyle(elem, "");
        result = cssDecl.getPropertyValue("left");
    } else if (elem.currentStyle) {
        result = elem.currentStyle.left;
    } else if (elem.style) {
        result = elem.style.left;
    } else if (isNN4) {
        result = elem.left;
    }
    return parseInt(result);
}

// Retrieve the y coordinate of a positionable object
function getObjectTop(obj)  {
    var elem = getRawObject(obj);
    var result = 0;
    if (document.defaultView) {
        var style = document.defaultView;
        var cssDecl = style.getComputedStyle(elem, "");
        result = cssDecl.getPropertyValue("top");
    } else if (elem.currentStyle) {
        result = elem.currentStyle.top;
    } else if (elem.style) {
        result = elem.style.top;
    } else if (isNN4) {
        result = elem.top;
    }
    return parseInt(result);
}

// Retrieve the rendered width of an element
function getObjectWidth(obj)  {
    var elem = getRawObject(obj);
    var result = 0;
    if (elem.offsetWidth) {
        result = elem.offsetWidth;
    } else if (elem.clip && elem.clip.width) {
        result = elem.clip.width;
    } else if (elem.style && elem.style.pixelWidth) {
        result = elem.style.pixelWidth;
    }
    return parseInt(result);
}

// Retrieve the rendered height of an element
function getObjectHeight(obj)  {
    var elem = getRawObject(obj);
    var result = 0;
    if (elem.offsetHeight) {
        result = elem.offsetHeight;
    } else if (elem.clip && elem.clip.height) {
        result = elem.clip.height;
    } else if (elem.style && elem.style.pixelHeight) {
        result = elem.style.pixelHeight;
    }
    return parseInt(result);
}


// Return the available content width space in browser window
function getInsideWindowWidth() {
    if (window.innerWidth) {
        return window.innerWidth;
    } else if (isIE6CSS) {
        // measure the html element's clientWidth
        return document.body.parentElement.clientWidth
    } else if (document.body && document.body.clientWidth) {
        return document.body.clientWidth;
    }
    return 0;
}
// Return the available content height space in browser window
function getInsideWindowHeight() {
    if (window.innerHeight) {
        return window.innerHeight;
    } else if (isIE6CSS) {
        // measure the html element's clientHeight
        return document.body.parentElement.clientHeight
    } else if (document.body && document.body.clientHeight) {
        return document.body.clientHeight;
    }
    return 0;
}