function addLoadEvent(func) {
    var oldonload = window.onload;
    if (typeof window.onload != 'function') { window.onload = func; }
    else {
    	window.onload = function() {
			if (oldonload) {
				oldonload();
            	}
			func();
        	}
    	}
	}
	
addLoadEvent(function() {
	
	var instr
	if ((instr = document.getElementById('instr_close'))) {
		var instructions = document.getElementById('instructions')
		instr.hideDiv = instructions
		instr.onclick = hideDiv
		}
	})

function showDiv() {
	this.showDiv.style.display = 'block'
	}

function hideDiv() {
	this.hideDiv.style.display = 'none'
	}

addLoadEvent(function() {
	var formObject
	if ((formObject = document.getElementById('contactForm'))) {
		
		var myName = document.getElementById('name')
		var myOrg = document.getElementById('organisation')
		var myEmail = document.getElementById('email')
		var myInfo = document.getElementById('opt_info')
		var myQuote = document.getElementById('opt_quote')
		
		formObject.onsubmit = function() { return validate(myName.value,myOrg.value,myEmail.value,myInfo.checked,myQuote.checked) }
		}
	})

function validate(myName,myOrg,myEmail,myInfo,myQuote) {
	if (myName == '' || myOrg == '' || myEmail == '') {
		alert('Please complete the required fields')
		return false
		}
	
	else return true
	}

addLoadEvent(function() {

	var n;
	window.slideTitles = [
		['This Slide Show Requires Javascript',0,'',0],
		['Getting to Grips with Escendency','1','',0],
		['Highest Level Objective','2','',0],
		['Posts','3','',0],
		['Performance Indicators','4','',0],
		['Targets','5','',0],
		['Responsibilities','6','',0],
		['Inputting Data','7','',0],
		['Action Plans','8','',0],
		['Reporting','9','',0],
		['The End','10','',0]
		]	
	window.jumpShip = 31;
	window.goDemo = 40;
	
	var nextButton = document.getElementById('buttonNext');
	var prevButton = document.getElementById('buttonPrevious');
	var firstButton = document.getElementById('buttonFirst');
	var thisButton = document.getElementById('numerator');
	if ((document.getElementById('gallery'))) {
		var thisGallery = document.getElementById('gallery').getElementsByTagName('img')[0]
		}
	if ((document.getElementById('newGallery'))) {
		var thisGallery = document.getElementById('newGallery').getElementsByTagName('img')[0]
		}
	var thisGoto = document.getElementById('gotoSlide').getElementsByTagName('a')[0]
	var thisSelector = document.getElementById('goto')
	
	for (n = 1; n < window.slideTitles.length; n++) {
		var option = document.createElement('option');
		if (window.slideTitles[n][3] == 1) {
			option.setAttribute('class','hilite')
			option.style.color = '#fff'
			option.style.backgroundColor = '#69c'
			}
		else {
			option.style.color = '#000'
			option.style.backgroundColor = '#fff'
			}
		thisSelector.appendChild(option);
		option.setAttribute('value',n); 
		option.appendChild(document.createTextNode(n + ': ' + window.slideTitles[n][0]));
		}
	thisButton.firstChild.nodeValue = 1;
	thisGallery.setAttribute('src','slides/izzy1.jpg');
	
	var myH2 = document.getElementById('slideTitle')
	myH2.firstChild.nodeValue = window.slideTitles[1][0];
	
	var thisDelimiter = document.getElementById('delimiter');
	thisDelimiter.firstChild.nodeValue = window.slideTitles.length - 1;
	
	var myNotes = document.getElementById('galleryNotes').firstChild;
	myNotes.nodeValue = window.slideTitles[1][2];
	
	var buttonVars = {}
	buttonVars = [thisButton,thisGallery,thisSelector]
	
	firstButton.buttonVars = buttonVars
	firstButton.direction = -1
	firstButton.onmousedown = nextSlide
	firstButton.onmouseover = changeButton
	firstButton.onmouseout = restoreButton
	
	nextButton.buttonVars = buttonVars
	nextButton.direction = 0
	nextButton.onmousedown = nextSlide
	nextButton.onmouseover = changeButton
	nextButton.onmouseout = restoreButton
	
	prevButton.buttonVars = buttonVars
	prevButton.direction = 1
	prevButton.onmousedown = nextSlide
	prevButton.onmouseover = changeButton
	prevButton.onmouseout = restoreButton
	
	thisGoto.buttonVars = buttonVars
	thisGoto.onmousedown = showSelector
	
	thisSelector.gallery = thisGallery
	thisSelector.button = thisButton
	thisSelector.onchange = newSlide
	
	})

function hideLinks() {
	
	var newsLink = document.getElementsByTagName('a')[4];
	newsLink.setAttribute('href','#');
	var libraryLink = document.getElementsByTagName('a')[5];
	libraryLink.setAttribute('href','#');
	var aboutLink = document.getElementsByTagName('a')[6];
	aboutLink.setAttribute('href','#');
	var contactLink = document.getElementsByTagName('a')[7];
	contactLink.setAttribute('href','#');
	var contactLink = document.getElementsByTagName('a')[8];
	contactLink.setAttribute('href','#');
	
	}

function showLinks() {
	
	var newsLink = document.getElementsByTagName('a')[4];
	newsLink.setAttribute('href','news.html');
	var libraryLink = document.getElementsByTagName('a')[5];
	libraryLink.setAttribute('href','specialschools/index.php');
	var libraryLink = document.getElementsByTagName('a')[6];
	libraryLink.setAttribute('href','documents.html');
	var aboutLink = document.getElementsByTagName('a')[7];
	aboutLink.setAttribute('href','aboutus.html');
	var contactLink = document.getElementsByTagName('a')[8];
	contactLink.setAttribute('href','contact.html');
	
	}

function showSelector() {
	var selector = this.buttonVars[2]
	selector.style.display = 'inline'
	hideLinks();
	}

function newSlide() {
	
	this.style.display = 'none';
	var myOption = this.selectedIndex + 1;
	var myNum = this.button
	var mySlide = this.gallery
	myNum.firstChild.nodeValue = myOption;
	mySlide.setAttribute('src','slides/izzy' + slideTitles[myOption][1] + '.jpg');
	
	var myH2 = document.getElementById('slideTitle')
	myH2.style.visibility = 'hidden'
	window.setTimeout('delayTitle()',1000);
	myH2.firstChild.nodeValue = window.slideTitles[myOption][0];
	
	var myNotes = document.getElementById('galleryNotes').firstChild;
	myNotes.nodeValue = window.slideTitles[myOption][2];
		
	var lastSlide = document.getElementById('nextStep');
	lastSlide.style.display = 'none';
		
	if (window.slideTitles[myOption][0] == 'Want to know more?' || window.slideTitles[myOption][0] == 'Optional - Fun Reporting for Pupils') {
		mySlide.setAttribute('src','slides/izzy0.jpg');
		lastSlide.style.display = 'block';
			lastSlide.style.backgroundColor = 'transparent';
		showInstructions()
		}
	
	var myGallery = document.getElementById('newGallery')
	var mail_link_div = document.createElement('div')
	var web_link_div = document.createElement('div')
	var mail_link_a = document.createElement('a')
	var web_link_a = document.createElement('a')
	mail_link_div.appendChild(mail_link_a)
	web_link_div.appendChild(web_link_a)
	var mail_link_img = document.createElement('img')
	var web_link_img = document.createElement('img')
	mail_link_a.appendChild(mail_link_img)
	web_link_a.appendChild(web_link_img)
	mail_link_img.setAttribute('src','images/mail_bloc.png')
	web_link_img.setAttribute('src','images/web_bloc.png')
	mail_link_a.setAttribute('href','mailto:info@escendency.com')
	web_link_a.setAttribute('href','http://www.escendency.com/schools')
	
	mail_link_div.style.position = 'absolute'
	mail_link_div.style.left = '420px'
	mail_link_div.style.top = '408px'
	web_link_div.style.position = 'absolute'
	web_link_div.style.left = '296px'
	web_link_div.style.top = '502px'
	
	if (window.slideTitles[myOption][0] == 'Want to see more?') {
		myGallery.appendChild(mail_link_div)
		myGallery.appendChild(web_link_div)
		mail_link_div.style.display = 'block'
		web_link_div.style.display = 'block'
		}
	else {
		mail_link_div.style.display = 'none'
		web_link_div.style.display = 'none'
		}
		
	if (window.slideTitles[myOption][1] == window.jumpShip) {
		mySlide.setAttribute('src','slides/izzy' + window.slideTitles[myOption][1] + '.jpg');
		lastSlide.style.display = 'block';
		}
	window.setTimeout('showLinks()',5000);
	
	}
/*
function showInstructions() {
	var instr
		if ((instr = document.getElementById('instr_close'))) {
			var instructions = document.getElementById('instructions')
			var instrP = instructions.getElementsByTagName('p')[0]
			clearLabel(instrP)
			instrP.appendChild(document.createTextNode('Tip: Remember if you have clicked F11 to temporarily remove the browser tool bars, clicking F11 again will restore them'))
			instructions.style.display = 'block'
			}
	}
*/
function delayTitle() {
	
	if ((document.getElementById('responseMessage'))) {
		var responseMessage = document.getElementById('responseMessage')
		responseMessage.style.display = 'none';
		}
	
	var myH2 = document.getElementById('slideTitle');
	myH2.style.visibility = 'visible';
	}

function nextSlide() {

	showLinks();
	
	var myNum = this.buttonVars[0]
	var mySlide = this.buttonVars[1]
	var selector = this.buttonVars[2]
	var num = this.direction
	
	selector.style.display = 'none';
	num = num * -2 + 1;
	var thisNum = eval(myNum.firstChild.nodeValue);
	if (num == 3) var newNum = '1';
	else var newNum = thisNum + num + '';
	
	if (newNum > 0 && newNum < window.slideTitles.length) {
	
		myNum.firstChild.nodeValue = newNum;
	
		mySlide.setAttribute('src','slides/izzy' + slideTitles[newNum][1] + '.jpg');
	
		var myH2 = document.getElementById('slideTitle');
		myH2.style.visibility = 'hidden'
		window.setTimeout('delayTitle()',1000);
		myH2.firstChild.nodeValue = window.slideTitles[newNum][0];
	
		var myNotes = document.getElementById('galleryNotes').firstChild;
		myNotes.nodeValue = window.slideTitles[newNum][2];
		
		var lastSlide = document.getElementById('nextStep');
		lastSlide.style.display = 'none';
		
		if (window.slideTitles[newNum][0] == 'Want to know more?' || window.slideTitles[newNum][0] == 'Optional - Fun Reporting for Pupils') {
			mySlide.setAttribute('src','slides/izzy0.jpg');
			lastSlide.style.display = 'block';
			lastSlide.style.backgroundColor = 'transparent';
			showInstructions()
			}
		
		if (window.slideTitles[newNum][1] == window.jumpShip) {
			mySlide.setAttribute('src','slides/izzy' + window.slideTitles[newNum][1] + '.jpg');
			lastSlide.style.display = 'block';
			}
		}
	
	}

function changeButton() {
	this.style.backgroundImage = "url(images/slide_control_o.jpg)";
	}

function restoreButton() {
	this.style.backgroundImage = "url(images/slide_control_u.jpg)";
	}

function clearLabel(myLabel) {
	while (myLabel.childNodes[0]) {
    		myLabel.removeChild(myLabel.childNodes[0]);
    		}
	}