// JavaScript Library


// 3 Cookie function from Dustin Diaz that are very useful
// http://www.dustindiaz.com/top-ten-javascript
function getCookie( name ) {
	var start = document.cookie.indexOf( name + "=" );
	var len = start + name.length + 1;
	if ( ( !start ) && ( name != document.cookie.substring( 0, name.length ) ) ) {
		return null;
	}
	if ( start == -1 ) return null;
	var end = document.cookie.indexOf( ';', len );
	if ( end == -1 ) end = document.cookie.length;
	return unescape( document.cookie.substring( len, end ) );
}

function setCookie( name, value, expires, path, domain, secure ) {
	var today = new Date();
	today.setTime( today.getTime() );
	if ( expires ) {
		expires = expires * 1000 * 60 * 60 * 24;
	}
	var expires_date = new Date( today.getTime() + (expires) );
	document.cookie = name+'='+escape( value ) +
		( ( expires ) ? ';expires='+expires_date.toGMTString() : '' ) + //expires.toGMTString()
		( ( path ) ? ';path=' + path : '' ) +
		( ( domain ) ? ';domain=' + domain : '' ) +
		( ( secure ) ? ';secure' : '' );
}

function deleteCookie( name, path, domain ) {
	if ( getCookie( name ) ) document.cookie = name + '=' +
			( ( path ) ? ';path=' + path : '') +
			( ( domain ) ? ';domain=' + domain : '' ) +
			';expires=Thu, 01-Jan-1970 00:00:01 GMT';
}



// Get Elements By Class Function
//http://www.dustindiaz.com/getelementsbyclass/
function getElementsByClass(SEARCHCLASS,NODE,TAG) {
	var classElements = new Array();
	if ( NODE == null )
		NODE = document;
	if ( TAG == null )
		TAG = '*';
	var els = NODE.getElementsByTagName(TAG);
	var elsLen = els.length;
	var pattern = new RegExp("(^|\\s)"+SEARCHCLASS+"(\\s|$)");
	for (i = 0, j = 0; i < elsLen; i++) {
		if ( pattern.test(els[i].className) ) {
			classElements[j] = els[i];
			j++;
		}
	}
	return classElements;
}
/* To Use:
var foo = getElementsByClass("special") // gets all tags w/ class of special.
var foo = getElementsByClass("special",varblock,"input") 
// gets all inputs w/ class "special" that are children of collection varblock .
*/



// Rounds up all a forms elements and combines their names and values into a pseudo querystring.
// Useful for sending form info to AJAX POST calls.
function gatherElms(argForm,argSeparator) {
	argSeparator = argSeparator || "&";
	var els = argForm.elements;
	var pairs = "";
	for (var i=0; i<els.length; i++) {
		if (els[i].value.length>0) {
			if (els[i].getAttribute("type")=="text" || els[i].checked==true || els[i].nodeName=="TEXTAREA" || els[i].nodeName=="SELECT")
				pairs += els[i].name + "=" + els[i].value + argSeparator;
		}
	}
	pairs = pairs.substring(0,pairs.length-1); // remove the last argSeparator.
	return pairs;
	// returns something like 'name=Bill&email=bill@gmail&text=I like you&submit=true'
}
// gatherElms($('theForm1')); builds the string using '&' to separate the name-value pairs.
// gatherElms($('theForm2'),"-"); builds the string using '-' to separate the name-value pairs.




function valEmail(prmElem) {
	// 1+ (alphanum OR '-' OR '.') then 1 '@' then any (alphanum OR '-') then 1 '.' 
	// then 0+ (alphanum OR '-' OR '.') then 2+ (alphanum); match the whole pattern.
	var pattern = /^[a-zA-Z0-9\-\.]+@{1}[a-zA-Z0-9\-]+\.{1}[a-zA-Z0-9\-\.]*[a-zA-Z0-9]{2,}$/;
	return (prmElem.match(pattern)) ? true : false;
}



// Jeff's QueryString Object - var x = QueryString.get("id");
var QueryString =  {

	keyValuePairs : Array, 
	q : "", 
	init : function () {
		
		this.q = window.location.search;
		if (this.q.length > 1) {
			this.q = this.q.substring(1, this.q.length);
		} else {
			this.q = null;
		}
		this.keyValuePairs = new Array();
		if (this.q) {
			for(var i=0; i < this.q.split("&").length; i++) {
				this.keyValuePairs[i] = this.q.split("&")[i];
			}
		}			
	}, 
	get : function(key) {
		for(var j=0; j < this.keyValuePairs.length; j++) {
			if(this.keyValuePairs[j].split("=")[0] == key)
				return this.keyValuePairs[j].split("=")[1];
		}
		return false;
	},
	toString : function() {return this.q;}, 
	getKeys : function() {
		var a = new Array(this.getLength());
		for(var j=0; j < this.keyValuePairs.length; j++) {
			a[j] = this.keyValuePairs[j].split("=")[0];
		}
		return a;
	}, 
	
	getKeyValuePairs : function() {return this.keyValuePairs;}, 
	getLength : function() {return this.keyValuePairs.length;}		
  
}
QueryString.init();


function cl(argString) {
	try {
		console.log(argString);	
	}
	catch(err) { }
}



function hasParent(el, parentToFind) {
	// returns boolean on whether or not el is an ancestor of parentToFind
	var bool = false;
	do {
		el = el.parentNode || false;
		if (!el) break;
		bool = (el == parentToFind) ? true : bool;
	}
	while (el && !bool)
	return bool; 
}




function breakOutOfLesson() {
	var links = document.getElementsByTagName("a");
	var target = document.getElementById("content-wrapper");
	var strMess = "By exiting this lesson page, the system will stop recording your time spent on this lesson. If that's what you wanted to do, click 'OK' below, otherwise click 'Cancel' to return to the lesson.";
	for (var i=0; i<links.length; i++) {
		if (!hasParent(links[i],target)) {
			links[i].onclick = function() {
				var confirmChoice = confirm(strMess);
				var strAjaxQS = "?lessonid=" + QueryString.get("lessonid");
				strAjaxQS += "&sessionid=" + QueryString.get("sessionid");
				if (!confirmChoice) return false;
				else $(this).get("/exit-lesson-listener.aspx" + strAjaxQS, checkajax);
			}
		}
	}
}

function checkajax() {
	var test = true;
	if (test) 
		alert("Hi. I'm in debug mode. Here's the ajax response: " + arguments[0]);
}


/***************** Here down uses DOMAssistant stuff ***********************/

function ale(prmFunc) {
	DOMAssistant.DOMReady(prmFunc);
}


function DAstriper(argDACollection, argAltClass) {
	// function defaults to the table.striped row striper if no arguments are passed.
	argDACollection = argDACollection || ".striped tr";
	argAltClass = argAltClass || "altRow";
	var counter = 0;
	$(argDACollection).each(function(){
		counter++;
		if (counter % 2) $(this).addClass(argAltClass);
	});
}
DOMAssistant.DOMReady(DAstriper);


function hoverTable() {
	$("body tr").addEvent("mouseover", function() {$(this).addClass("hover");});
	$("body tr").addEvent("mouseout", function() {$(this).removeClass("hover");});
}	
DOMAssistant.DOMReady(hoverTable);

function toggleClass(el, oldclass, newclass) {
	$(el).removeClass(oldclass);
	$(el).addClass(newclass);
}


function docheck() {
	$(".courseTOC div").each(function(){
		if ($(this).className.indexOf("completed") != -1) {
			$(this).addContent("<img class='comCheck' src='/images/check-big.png' />");
		}
	});
}
DOMAssistant.DOMReady(docheck);


function dropinlogo() {
	var title = document.getElementById("ctl00_mainContent_coursetitle");
	if (!title) return false;
	if (title.innerHTML.indexOf("SE") != -1) {
		var str = "<img src='/images/logos/soe.png' alt='' class='clientlogo' style='width:72px;height:72px;behavior:url(/iepngfix.htc)' />";
		getElementsByClass("courseInfoBar")[0].innerHTML += str;
	}
}
// Not needed any more as SOE has a custom banner instead.
//DOMAssistant.DOMReady(dropinlogo);