// S5 v1.1 slides.js -- released into the Public Domain
  //
  // Please see http://www.meyerweb.com/eric/tools/s5/credits.html for information 
  // about all the wonderful and talented contributors to this code!
  
  var undef;
  var slideCSS = '';
  var snum = 0;
  var smax = 1;
  var incpos = 0;
  var number = undef;
  var s5mode = true;
  var defaultView = 'slideshow';
  var controlVis = 'visible';
  
  var isIE = navigator.appName == 'Microsoft Internet Explorer' && navigator.userAgent.indexOf('Opera') < 1 ? 1 : 0;
  var isOp = navigator.userAgent.indexOf('Opera') > -1 ? 1 : 0;
  var isGe = navigator.userAgent.indexOf('Gecko') > -1 && navigator.userAgent.indexOf('Safari') < 1 ? 1 : 0;
  
  function hasClass(object, className) {
  	if (!object.className) return false;
  	return (object.className.search('(^|\\s)' + className + '(\\s|$)') != -1);
  }
  
  function hasValue(object, value) {
  	if (!object) return false;
  	return (object.search('(^|\\s)' + value + '(\\s|$)') != -1);
  }
  
  function removeClass(object,className) {
  	if (!object) return;
  	object.className = object.className.replace(new RegExp('(^|\\s)'+className+'(\\s|$)'), RegExp.$1+RegExp.$2);
  }
  
  function addClass(object,className) {
  	if (!object || hasClass(object, className)) return;
  	if (object.className) {
  		object.className += ' '+className;
  	} else {
  		object.className = className;
  	}
  }
  
  function GetElementsWithClassName(elementName,className) {
  	var allElements = document.getElementsByTagName(elementName);
  	var elemColl = new Array();
  	for (var i = 0; i< allElements.length; i++) {
  		if (hasClass(allElements[i], className)) {
  			elemColl[elemColl.length] = allElements[i];
  		}
  	}
  	return elemColl;
  }
  
  function isParentOrSelf(element, id) {
  	if (element == null || element.nodeName=='BODY') return false;
  	else if (element.id == id) return true;
  	else return isParentOrSelf(element.parentNode, id);
  }
  
  function nodeValue(node) {
  	var result = "";
  	if (node.nodeType == 1) {
  		var children = node.childNodes;
  		for (var i = 0; i < children.length; ++i) {
  			result += nodeValue(children[i]);
  		}		
  	}
  	else if (node.nodeType == 3) {
  		result = node.nodeValue;
  	}
  	return(result);
  }
  
  function slideLabel() {
  	var slideColl = GetElementsWithClassName('*','slide');
  	var list = document.getElementById('jumplist');
  	smax = slideColl.length;
  	for (var n = 0; n < smax; n++) {
  		var obj = slideColl[n];
  
  		var did = 'slide' + n.toString();
  		obj.setAttribute('id',did);
  		if (isOp) continue;
  
  		var otext = '';
  		var menu = obj.firstChild;
  		if (!menu) continue; // to cope with empty slides
  		while (menu && menu.nodeType == 3) {
  			menu = menu.nextSibling;
  		}
  	 	if (!menu) continue; // to cope with slides with only text nodes
  
  		var menunodes = menu.childNodes;
  		for (var o = 0; o < menunodes.length; o++) {
  			otext += nodeValue(menunodes[o]);
  		}
  		list.options[list.length] = new Option(n + ' : '  + otext, n);
  	}
  }
  
  function currentSlide() {
  	var cs;
  	if (document.getElementById) {
  		cs = document.getElementById('currentSlide');
  	} else {
  		cs = document.currentSlide;
  	}
  	cs.innerHTML = '<span id="csHere">' + snum + '<\/span> ' + 
  		'<span id="csSep">\/<\/span> ' + 
  		'<span id="csTotal">' + (smax-1) + '<\/span>';
  	if (snum == 0) {
  		cs.style.visibility = 'hidden';
  	} else {
  		cs.style.visibility = 'visible';
  	}
  }
  
  function go(step) {
  	if (document.getElementById('slideProj').disabled || step == 0) return;
  	var jl = document.getElementById('jumplist');
  	var cid = 'slide' + snum;
  	var ce = document.getElementById(cid);
  	if (incrementals[snum].length > 0) {
  		for (var i = 0; i < incrementals[snum].length; i++) {
  			removeClass(incrementals[snum][i], 'current');
  			removeClass(incrementals[snum][i], 'incremental');
  		}
  	}
  	if (step != 'j') {
  		snum += step;
  		lmax = smax - 1;
  		if (snum > lmax) snum = lmax;
  		if (snum < 0) snum = 0;
  	} else
  		snum = parseInt(jl.value);
  	var nid = 'slide' + snum;
  	var ne = document.getElementById(nid);
  	if (!ne) {
  		ne = document.getElementById('slide0');
  		snum = 0;
  	}
  	if (step < 0) {incpos = incrementals[snum].length} else {incpos = 0;}
  	if (incrementals[snum].length > 0 && incpos == 0) {
  		for (var i = 0; i < incrementals[snum].length; i++) {
  			if (hasClass(incrementals[snum][i], 'current'))
  				incpos = i + 1;
  			else
  				addClass(incrementals[snum][i], 'incremental');
  		}
  	}
  	if (incrementals[snum].length > 0 && incpos > 0)
  		addClass(incrementals[snum][incpos - 1], 'current');
  	ce.style.visibility = 'hidden';
  	ne.style.visibility = 'visible';
  	jl.selectedIndex = snum;
  	currentSlide();
  	number = 0;
  }
  
  function goTo(target) {
  	if (target >= smax || target == snum) return;
  	go(target - snum);
  }
  
  function subgo(step) {
  	if (step > 0) {
  		removeClass(incrementals[snum][incpos - 1],'current');
  		removeClass(incrementals[snum][incpos], 'incremental');
  		addClass(incrementals[snum][incpos],'current');
  		incpos++;
  	} else {
  		incpos--;
  		removeClass(incrementals[snum][incpos],'current');
  		addClass(incrementals[snum][incpos], 'incremental');
  		addClass(incrementals[snum][incpos - 1],'current');
  	}
  }
  
  function toggle() {
  	var slideColl = GetElementsWithClassName('*','slide');
  	var slides = document.getElementById('slideProj');
  	var outline = document.getElementById('outlineStyle');
  	if (!slides.disabled) {
  		slides.disabled = true;
  		outline.disabled = false;
  		s5mode = false;
  		fontSize('1em');
  		for (var n = 0; n < smax; n++) {
  			var slide = slideColl[n];
  			slide.style.visibility = 'visible';
  		}
  	} else {
  		slides.disabled = false;
  		outline.disabled = true;
  		s5mode = true;
  		fontScale();
  		for (var n = 0; n < smax; n++) {
  			var slide = slideColl[n];
  			slide.style.visibility = 'hidden';
  		}
  		slideColl[snum].style.visibility = 'visible';
  	}
  }
  
  function showHide(action) {
  	var obj = GetElementsWithClassName('*','hideme')[0];
  	switch (action) {
  	case 's': obj.style.visibility = 'visible'; break;
  	case 'h': obj.style.visibility = 'hidden'; break;
  	case 'k':
  		if (obj.style.visibility != 'visible') {
  			obj.style.visibility = 'visible';
  		} else {
  			obj.style.visibility = 'hidden';
  		}
  	break;
  	}
  }
  
  // 'keys' code adapted from MozPoint (http://mozpoint.mozdev.org/)
  function keys(key) {
  	if (!key) {
  		key = event;
  		key.which = key.keyCode;
  	}
  	if (key.which == 84) {
  		toggle();
  		return;
  	}
  	if (s5mode) {
  		switch (key.which) {
  			case 10: // return
  			case 13: // enter
  				if (window.event && isParentOrSelf(window.event.srcElement, 'controls')) return;
  				if (key.target && isParentOrSelf(key.target, 'controls')) return;
  				if(number != undef) {
  					goTo(number);
  					break;
  				}
  			case 32: // spacebar
  			case 34: // page down
  			case 39: // rightkey
  			case 40: // downkey
  				if(number != undef) {
  					go(number);
  				} else if (!incrementals[snum] || incpos >= incrementals[snum].length) {
  					go(1);
  				} else {
  					subgo(1);
  				}
  				break;
  			case 33: // page up
  			case 37: // leftkey
  			case 38: // upkey
  				if(number != undef) {
  					go(-1 * number);
  				} else if (!incrementals[snum] || incpos <= 0) {
  					go(-1);
  				} else {
  					subgo(-1);
  				}
  				break;
  			case 36: // home
  				goTo(0);
  				break;
  			case 35: // end
  				goTo(smax-1);
  				break;
  			case 67: // c
  				showHide('k');
  				break;
  		}
  		if (key.which < 48 || key.which > 57) {
  			number = undef;
  		} else {
  			if (window.event && isParentOrSelf(window.event.srcElement, 'controls')) return;
  			if (key.target && isParentOrSelf(key.target, 'controls')) return;
  			number = (((number != undef) ? number : 0) * 10) + (key.which - 48);
  		}
  	}
  	return false;
  }
  
  function clicker(e) {
  	number = undef;
  	var target;
  	if (window.event) {
  		target = window.event.srcElement;
  		e = window.event;
  	} else target = e.target;
  	if (target.getAttribute('href') != null || hasValue(target.rel, 'external') || isParentOrSelf(target, 'controls') || isParentOrSelf(target,'embed') || isParentOrSelf(target,'object')) return true;
  	if (!e.which || e.which == 1) {
  		if (!incrementals[snum] || incpos >= incrementals[snum].length) {
  			go(1);
  		} else {
  			subgo(1);
  		}
  	}
  }
  
  function findSlide(hash) {
  	var target = null;
  	var slides = GetElementsWithClassName('*','slide');
  	for (var i = 0; i < slides.length; i++) {
  		var targetSlide = slides[i];
  		if ( (targetSlide.name && targetSlide.name == hash)
  		 || (targetSlide.id && targetSlide.id == hash) ) {
  			target = targetSlide;
  			break;
  		}
  	}
  	while(target != null && target.nodeName != 'BODY') {
  		if (hasClass(target, 'slide')) {
  			return parseInt(target.id.slice(5));
  		}
  		target = target.parentNode;
  	}
  	return null;
  }
  
  function slideJump() {
  	if (window.location.hash == null) return;
  	var sregex = /^#slide(\d+)$/;
  	var matches = sregex.exec(window.location.hash);
  	var dest = null;
  	if (matches != null) {
  		dest = parseInt(matches[1]);
  	} else {
  		dest = findSlide(window.location.hash.slice(1));
  	}
  	if (dest != null)
  		go(dest - snum);
  }
  
  function fixLinks() {
  	var thisUri = window.location.href;
  	thisUri = thisUri.slice(0, thisUri.length - window.location.hash.length);
  	var aelements = document.getElementsByTagName('A');
  	for (var i = 0; i < aelements.length; i++) {
  		var a = aelements[i].href;
  		var slideID = a.match('\#slide[0-9]{1,2}');
  		if ((slideID) && (slideID[0].slice(0,1) == '#')) {
  			var dest = findSlide(slideID[0].slice(1));
  			if (dest != null) {
  				if (aelements[i].addEventListener) {
  					aelements[i].addEventListener("click", new Function("e",
  						"if (document.getElementById('slideProj').disabled) return;" +
  						"go("+dest+" - snum); " +
  						"if (e.preventDefault) e.preventDefault();"), true);
  				} else if (aelements[i].attachEvent) {
  					aelements[i].attachEvent("onclick", new Function("",
  						"if (document.getElementById('slideProj').disabled) return;" +
  						"go("+dest+" - snum); " +
  						"event.returnValue = false;"));
  				}
  			}
  		}
  	}
  }
  
  function externalLinks() {
  	if (!document.getElementsByTagName) return;
  	var anchors = document.getElementsByTagName('a');
  	for (var i=0; i<anchors.length; i++) {
  		var anchor = anchors[i];
  		if (anchor.getAttribute('href') && hasValue(anchor.rel, 'external')) {
  			anchor.target = '_blank';
  			addClass(anchor,'external');
  		}
  	}
  }
  
  function createControls() {
  	var controlsDiv = document.getElementById("controls");
  	if (!controlsDiv) return;
  	var hider = ' onmouseover="showHide(\'s\');" onmouseout="showHide(\'h\');"';
  	var hideDiv, hideList = '';
  	if (controlVis == 'hidden') {
  		hideDiv = hider;
  	} else {
  		hideList = hider;
  	}
  	controlsDiv.innerHTML = '<form action="#" id="controlForm"' + hideDiv + '>' +
  	'<div id="navLinks">' +
  	'<a accesskey="t" id="toggle" href="javascript:toggle();">&#216;<\/a>' +
  	'<a accesskey="z" id="prev" href="javascript:go(-1);">&laquo;<\/a>' +
  	'<a accesskey="x" id="next" href="javascript:go(1);">&raquo;<\/a>' +
  	'<div id="navList"' + hideList + '><select id="jumplist" onchange="go(\'j\');"><\/select><\/div>' +
  	'<\/div><\/form>';
  	if (controlVis == 'hidden') {
  		var hidden = document.getElementById('navLinks');
  	} else {
  		var hidden = document.getElementById('jumplist');
  	}
  	addClass(hidden,'hideme');
  }
  
  function fontScale() {  // causes layout problems in FireFox that get fixed if browser's Reload is used; same may be true of other Gecko-based browsers
  	if (!s5mode) return false;
  	var vScale = 22;  // both yield 32 (after rounding) at 1024x768
  	var hScale = 32;  // perhaps should auto-calculate based on theme's declared value?
  	if (window.innerHeight) {
  		var vSize = window.innerHeight;
  		var hSize = window.innerWidth;
  	} else if (document.documentElement.clientHeight) {
  		var vSize = document.documentElement.clientHeight;
  		var hSize = document.documentElement.clientWidth;
  	} else if (document.body.clientHeight) {
  		var vSize = document.body.clientHeight;
  		var hSize = document.body.clientWidth;
  	} else {
  		var vSize = 700;  // assuming 1024x768, minus chrome and such
  		var hSize = 1024; // these do not account for kiosk mode or Opera Show
  	}
  	var newSize = Math.min(Math.round(vSize/vScale),Math.round(hSize/hScale));
  	fontSize(newSize + 'px');
  	if (isGe) {  // hack to counter incremental reflow bugs
  		var obj = document.getElementsByTagName('body')[0];
  		obj.style.display = 'none';
  		obj.style.display = 'block';
  	}
  }
  
  function fontSize(value) {
  	if (!(s5ss = document.getElementById('s5ss'))) {
  		if (!isIE) {
  			document.getElementsByTagName('head')[0].appendChild(s5ss = document.createElement('style'));
  			s5ss.setAttribute('media','screen, projection');
  			s5ss.setAttribute('id','s5ss');
  		} else {
  			document.createStyleSheet();
  			document.s5ss = document.styleSheets[document.styleSheets.length - 1];
  		}
  	}
  	if (!isIE) {
  		while (s5ss.lastChild) s5ss.removeChild(s5ss.lastChild);
  		s5ss.appendChild(document.createTextNode('body {font-size: ' + value + ' !important;}'));
  	} else {
  		document.s5ss.addRule('body','font-size: ' + value + ' !important;');
  	}
  }
  
  function notOperaFix() {
  	slideCSS = document.getElementById('slideProj').href;
  	var slides = document.getElementById('slideProj');
  	var outline = document.getElementById('outlineStyle');
  	slides.setAttribute('media','screen');
  	outline.disabled = true;
  	if (isGe) {
  		slides.setAttribute('href','null');   // Gecko fix
  		slides.setAttribute('href',slideCSS); // Gecko fix
  	}
  	if (isIE && document.styleSheets && document.styleSheets[0]) {
  		document.styleSheets[0].addRule('img', 'behavior: url(ui/default/iepngfix.htc)');
  		document.styleSheets[0].addRule('div', 'behavior: url(ui/default/iepngfix.htc)');
  		document.styleSheets[0].addRule('.slide', 'behavior: url(ui/default/iepngfix.htc)');
  	}
  }
  
  function getIncrementals(obj) {
  	var incrementals = new Array();
  	if (!obj) 
  		return incrementals;
  	var children = obj.childNodes;
  	for (var i = 0; i < children.length; i++) {
  		var child = children[i];
  		if (hasClass(child, 'incremental')) {
  			if (child.nodeName == 'OL' || child.nodeName == 'UL') {
  				removeClass(child, 'incremental');
  				for (var j = 0; j < child.childNodes.length; j++) {
  					if (child.childNodes[j].nodeType == 1) {
  						addClass(child.childNodes[j], 'incremental');
  					}
  				}
  			} else {
  				incrementals[incrementals.length] = child;
  				removeClass(child,'incremental');
  			}
  		}
  		if (hasClass(child, 'show-first')) {
  			if (child.nodeName == 'OL' || child.nodeName == 'UL') {
  				removeClass(child, 'show-first');
  				if (child.childNodes[isGe].nodeType == 1) {
  					removeClass(child.childNodes[isGe], 'incremental');
  				}
  			} else {
  				incrementals[incrementals.length] = child;
  			}
  		}
  		incrementals = incrementals.concat(getIncrementals(child));
  	}
  	return incrementals;
  }
  
  function createIncrementals() {
  	var incrementals = new Array();
  	for (var i = 0; i < smax; i++) {
  		incrementals[i] = getIncrementals(document.getElementById('slide'+i));
  	}
  	return incrementals;
  }
  
  function defaultCheck() {
  	var allMetas = document.getElementsByTagName('meta');
  	for (var i = 0; i< allMetas.length; i++) {
  		if (allMetas[i].name == 'defaultView') {
  			defaultView = allMetas[i].content;
  		}
  		if (allMetas[i].name == 'controlVis') {
  			controlVis = allMetas[i].content;
  		}
  	}
  }
  
  // Key trap fix, new function body for trap()
  function trap(e) {
  	if (!e) {
  		e = event;
  		e.which = e.keyCode;
  	}
  	try {
  		modifierKey = e.ctrlKey || e.altKey || e.metaKey;
  	}
  	catch(e) {
  		modifierKey = false;
  	}
  	return modifierKey || e.which == 0;
  }
  
  function startup() {
      /* wize function to run onload */
      testLogo();
      
  	defaultCheck();
  	if (!isOp) 
  		createControls();
  	slideLabel();
  	fixLinks();
  	externalLinks();
  	fontScale();
  	if (!isOp) {
  		notOperaFix();
  		incrementals = createIncrementals();
  		slideJump();
  		if (defaultView == 'outline') {
  			toggle();
  		}
  		document.onkeyup = keys;
  		document.onkeypress = trap;
  		document.onclick = clicker;
  	}
  }
  
  window.onload = startup;
  window.onresize = function(){setTimeout('fontScale()', 50);}