var overlayOpacity = 0.3;
var animate = true;
var resizeSpeed = 7;
var pageArray = new Array;
var activeImage;
var borderSize = 1;
var paddingSize = 30;
var noClose = false;

if(animate == true) {
	overlayDuration = 0.2;
	if(resizeSpeed > 10){ resizeSpeed = 10;}
	if(resizeSpeed < 1){ resizeSpeed = 1;}
	resizeDuration = (11 - resizeSpeed) * 0.15;
} else { 
	overlayDuration = 0;
	resizeDuration = 0;
}


var Popup = {
	
	active: true,
	opened: false,
	defaultWidth:320,
	defaultHeight:200,
	
	initialize: function() {
		
	},
	
	load: function() {	
		
		var objBody = document.getElementsByTagName("body").item(0);
		
		var objOverlay = new Element('div',{'id':'popupOverlay'});
		objOverlay.style.display = 'none';
		objBody.appendChild(objOverlay);
		
		var objPopup = new Element("div", {'id':'popup'});
		objPopup.style.display = 'none';
		objBody.appendChild(objPopup);
				
		var objPopupContentContainer = new Element("div", {'id':'popupContentContainer'});
		objPopup.appendChild(objPopupContentContainer);
		if(animate){
			Element.setStyle('popupContentContainer', {width:"250px"});
			Element.setStyle('popupContentContainer', {height:"1px"});			
		} else {
			Element.setStyle('popupContentContainer', {width:"250px"});
			Element.setStyle('popupContentContainer', {height:"1px"});
		}
		
		var objPopupContent = new Element("div", {'id':'popupContent', 'border':0});
		objPopupContentContainer.appendChild(objPopupContent);
		
		var objPopupContentPage = new Element("iframe", {'id':'popupContentPage', 'scrolling':'no'});
		if(Prototype.Browser.IE) objPopupContentPage.frameBorder = 0;
		objPopupContent.appendChild(objPopupContentPage);
		
		var objHoverNav = new Element("div", {'id':'popupHoverNav'});
		objPopupContentContainer.appendChild(objHoverNav);
		
		var objPrevLink = document.createElement("a");
		objPrevLink.setAttribute('id','popupPrevLink');
		objPrevLink.setAttribute('href','#');
		objHoverNav.appendChild(objPrevLink);
		Event.observe($('popupPrevLink'),'click', function(ev) {Popup.previousPage();});
		
		var objNextLink = document.createElement("a");
		objNextLink.setAttribute('id','popupNextLink');
		objNextLink.setAttribute('href','#');
		objHoverNav.appendChild(objNextLink);
		Event.observe($('popupNextLink'),'click', function(ev) {Popup.nextPage();});
		
		var objCloseLink = new Element("a", {'id':'popupCloseLink', 'href': '#'});
		objCloseLink.onclick = function() { Popup.end(); return false; }
		objHoverNav.appendChild(objCloseLink);
		
		Element.setStyle('popupContent',{padding:paddingSize+"px"});
		
		$$('a[rel^=popup]').each(function(anchor) {
			Event.observe(anchor,'click', function(ev) {Popup.open(ev);});
		});
		
	},

	activate: function () {
		Popup.active = true;
	},
	
	deactivate: function () {
		Popup.active = false;
	},
	
	open: function (ev) {
		if(ev) Event.stop(ev);
		if(Popup.active) {
			var el = Event.element(ev);
			el = el.up('a') ? el.up('a') : el;
			Popup.start(el);
		}
	},

	start: function(el, notClosable) {	
		
		noClose = (notClosable) ? true : noClose;
		if(noClose) {
			Element.hide('popupCloseLink');
			$('popup').onclick = function(e) {}
		} else {
			Element.show('popupCloseLink');
			$('popup').onclick = function(e) {
				if (!e) var e = window.event;
				var clickObj = Event.element(e).id;
				if ( clickObj == 'popup') Popup.end();
			};	 
		}
		
		Element.hide('popupPrevLink');
		Element.hide('popupNextLink');
		
		//$$('select').each(function(e) {Element.hide(e);});
		$$('object').each(function(e) {Element.hide(e);});
		$$('embed').each(function(e) {Element.hide(e);});
		
		// stretch overlay to fill page and fade in
		var arrayPageSize = getPageSize();
		Element.setStyle('popupOverlay', {width:arrayPageSize[0]+'px'});
		Element.setStyle('popupOverlay', {height:arrayPageSize[1]+'px'});
		new Effect.Appear('popupOverlay', { duration: 0.2, from: 0.0, to: overlayOpacity });
		//Element.show('popupOverlay');
		
		pageArray = [];
		pageNum = 0;	
		
		var arrayPageScroll = getPageScroll();
		var popupLeft = arrayPageScroll[0];
		var popupTop = arrayPageScroll[1];
		
		if((Element.readAttribute(el, 'rel') == 'popup')) {
			if(Element.readAttribute(el, 'rev')) {
				var aDim = Element.readAttribute(el,'rev').match(/[0-9]+/g);
				var pageWidth = (aDim && (parseInt(aDim[0]) > 0)) ? parseInt(aDim[0]) : 0;
				var pageHeight = (aDim && (parseInt(aDim[1]) > 0)) ? parseInt(aDim[1]) : 0;
				popupTop += ((arrayPageSize[3]-pageHeight)/3);
			} else {
				var pageWidth = Popup.defaultWidth;
				var pageHeight = Popup.defaultHeight;
				popupTop += ((arrayPageSize[3]-pageHeight)/3);
			}
			pageArray.push(new Array(Element.readAttribute(el, 'href'), Element.readAttribute(el,'title'), pageWidth, pageHeight));
		} else {
			$$(el.tagName).each(function(anchor) {
				if (Element.readAttribute(anchor, 'href') && (Element.readAttribute(anchor,'rel') == Element.readAttribute(el, 'rel'))) {
					if(Element.readAttribute(anchor, 'rev')) {
						var aDim = Element.readAttribute(anchor, 'rev').match(/[0-9]+/g);
						var pageWidth = (aDim && (parseInt(aDim[0]) > 0)) ? parseInt(aDim[0]) : 0;
						var pageHeight = (aDim && (parseInt(aDim[1]) > 0)) ? parseInt(aDim[1]) : 0;
						//popupTop += ((arrayPageSize[3]-pageHeight)/3);
					} else {
						var pageWidth = Popup.defaultWidth;
						var pageHeight = Popup.defaultHeight;
						//popupTop += ((arrayPageSize[3]-pageHeight)/3);
					}
					pageArray.push(new Array(Element.readAttribute(anchor, 'href'), Element.readAttribute(anchor, 'title'), pageWidth, pageHeight));
				}
			});
			pageArray.removeDuplicates();
			while(pageArray[pageNum][0] != Element.readAttribute(el, 'href')) { pageNum++;}
			popupTop += ((arrayPageSize[3]-pageArray[pageNum][3])/3);
		}
		Element.setStyle('popup', {left:popupLeft+'px'});
		Element.setStyle('popup', {top:popupTop+'px'});
		
		Element.show('popup');
		Popup.opened = true;
		Popup.changePage(pageNum);
	},
	
	nextPage: function() {
		Popup.disableKeyboardNav();
		Popup.changePage(activePage + 1);
	},
	
	previousPage: function() {
		Popup.disableKeyboardNav();
		Popup.changePage(activePage - 1);
	},

	changePage: function(pageNum) {
		
		Element.hide('popupHoverNav');
		activePage = pageNum;
		Popup.resize(pageArray[activePage][2], pageArray[activePage][3]);
		
	},

	resize: function( pageWidth, pageHeight) {
	
		Element.hide('popupContentPage');
		Element.writeAttribute('popupContentPage', 'src', '');
		
		Popup.widthCurrent = Element.getWidth('popupContentContainer');
		Popup.heightCurrent = Element.getHeight('popupContentContainer');
		
		var widthNew = (pageWidth  + (paddingSize * 2));
		var heightNew = (pageHeight  + (paddingSize * 2));

		Popup.xScale = ( widthNew / Popup.widthCurrent) * 100;
		Popup.yScale = ( heightNew / Popup.heightCurrent) * 100;

		wDiff = Popup.widthCurrent - widthNew - (2*borderSize);
		hDiff = Popup.heightCurrent - heightNew - (2*borderSize);
 
 		if(!( hDiff == 0)){ new Effect.Scale('popupContentContainer', Popup.yScale, {scaleX: false, duration: resizeDuration}); }
		if(!( wDiff == 0)){ new Effect.Scale('popupContentContainer', Popup.xScale, {scaleY: false, delay: resizeDuration, duration: resizeDuration}); }

		if((hDiff == 0) && (wDiff == 0)){
			//if (navigator.appVersion.indexOf("MSIE")!=-1){ pause(250); } else { pause(100);} 
		}
		
		Element.setStyle('popupHoverNav', {width:widthNew+'px'});
		Element.setStyle('popupHoverNav', {height:heightNew+'px'});
		new Effect.Appear('popupContentContainer', {delay: resizeDuration, duration: resizeDuration, afterFinish:function(){Popup.setPage(pageWidth, pageHeight);} });
		
	},
 
 	setSize: function( pageWidth, pageHeight) {
 		
 		Popup.widthCurrent = Element.getWidth('popupContentContainer');
		Popup.heightCurrent = Element.getHeight('popupContentContainer');
		
		var widthNew = (pageWidth  + (paddingSize * 2));
		var heightNew = (pageHeight  + (paddingSize * 2));

		Popup.xScale = ( widthNew / Popup.widthCurrent) * 100;
		Popup.yScale = ( heightNew / Popup.heightCurrent) * 100;

		wDiff = Popup.widthCurrent - widthNew - (2*borderSize);
		hDiff = Popup.heightCurrent - heightNew - (2*borderSize);
		
 		if(!( hDiff == 0)){ new Effect.Scale('popupContentContainer', Popup.yScale, {scaleX: false, duration: resizeDuration}); }
		if(!( wDiff == 0)){ new Effect.Scale('popupContentContainer', Popup.xScale, {scaleY: false, delay: resizeDuration, duration: resizeDuration}); }
		
		Element.setStyle('popupHoverNav', {width:widthNew+'px'});
		Element.setStyle('popupHoverNav', {height:heightNew+'px'});
		Element.setStyle('popupContentPage', {width:pageWidth+'px'});
		Element.setStyle('popupContentPage', {height:pageHeight+'px'});
 		
 	},
 	
 	setPage: function(pageWidth, pageHeight) {
		
		Element.show('popupContentPage');
		Element.setStyle( 'popupContentPage', {width:pageWidth+'px'});
		Element.setStyle( 'popupContentPage', {height:pageHeight+'px'});
		var url = (parseUri(pageArray[activePage][0]).query!="") ? pageArray[activePage][0]+"&popup=true" : pageArray[activePage][0]+"?popup=true";
		Element.writeAttribute('popupContentPage', 'src', url);
		Element.show('popupHoverNav');

		if(activePage > 0) {
			Element.show('popupPrevLink');
			
		} else {
			Element.hide('popupPrevLink');
		}
		if(activePage < (pageArray.length - 1)) {
			Element.show('popupNextLink');
			
		} else {
			Element.hide('popupNextLink');
		}
		
		this.enableKeyboardNav();
		
	},
	
 	enableKeyboardNav: function() {
		document.onkeydown = Popup.keyboardAction; 
	},

	disableKeyboardNav: function() {
		document.onkeydown = '';
	},

	keyboardAction: function(e) {
		
		if (e == null) { // ie
			keycode = event.keyCode;
			escapeKey = 27;
		} else { // mozilla
			keycode = e.keyCode;
			escapeKey = e.DOM_VK_ESCAPE;
		}
		key = String.fromCharCode(keycode).toLowerCase();
		if((key == 'x') || (key == 'o') || (key == 'c') || (keycode == escapeKey)){	// close popup
			Popup.end();
		} else if((key == 'p') || (keycode == 37)){	// display previous page
			if(activePage != 0) {
				Popup.disableKeyboardNav();
				Popup.previousPage();
			}
		} else if((key == 'n') || (keycode == 39)){	// display next page
			if(activePage != (pageArray.length - 1)){
				Popup.disableKeyboardNav();
				Popup.nextPage();
			}
		}

	},

	end: function() {
		Popup.disableKeyboardNav();
		Popup.opened = false;
		Element.hide('popup');
		Element.hide('popupOverlay');
		//new Effect.Fade('popupOverlay', { duration: overlayDuration});
		//$$('select').each(function(e) {Element.show(e);});
		$$('object').each(function(e) {Element.show(e);});
		$$('embed').each(function(e) {Element.show(e);});
	}

};

//------------------------------------------------------------------------------
// Parsing
//------------------------------------------------------------------------------

function parseUri(str) {
	var	o   = parseUri.options,
		m   = o.parser[o.strictMode ? "strict" : "loose"].exec(str),
		uri = {},
		i   = 14;

	while (i--) uri[o.key[i]] = m[i] || "";

	uri[o.q.name] = {};
	uri[o.key[12]].replace(o.q.parser, function ($0, $1, $2) {
		if ($1) uri[o.q.name][$1] = $2;
	});

	return uri;
};

parseUri.options = {
	strictMode: false,
	key: ["source","protocol","authority","userInfo","user","password","host","port","relative","path","directory","file","query","anchor"],
	q:   {
		name:   "queryKey",
		parser: /(?:^|&)([^&=]*)=?([^&]*)/g
	},
	parser: {
		strict: /^(?:([^:\/?#]+):)?(?:\/\/((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?))?((((?:[^?#\/]*\/)*)([^?#]*))(?:\?([^#]*))?(?:#(.*))?)/,
		loose:  /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*):?([^:@]*))?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/
	}
};

//------------------------------------------------------------------------------
// Graphics
//------------------------------------------------------------------------------

function getPageScroll() {
	var xScroll, yScroll;
	if (self.pageYOffset) {
		yScroll = self.pageYOffset;
		xScroll = self.pageXOffset;
	} else if (document.documentElement && document.documentElement.scrollTop){	 // Explorer 6 Strict
		yScroll = document.documentElement.scrollTop;
		xScroll = document.documentElement.scrollLeft;
	} else if (document.body) {// all other Explorers
		yScroll = document.body.scrollTop;
		xScroll = document.body.scrollLeft;	
	}
	arrayPageScroll = new Array(xScroll,yScroll) 
	return arrayPageScroll;
}

function getPageSize() {
	var xScroll, yScroll;
	if (window.innerHeight && window.scrollMaxY) {	
		xScroll = window.innerWidth + window.scrollMaxX;
		yScroll = window.innerHeight + window.scrollMaxY;
	} else if (document.body.scrollHeight > document.body.offsetHeight){ // all but Explorer Mac
		xScroll = document.body.scrollWidth;
		yScroll = document.body.scrollHeight;
	} else { // Explorer Mac...would also work in Explorer 6 Strict, Mozilla and Safari
		xScroll = document.body.offsetWidth;
		yScroll = document.body.offsetHeight;
	}
	var windowWidth, windowHeight;
	if (self.innerHeight) {	// all except Explorer
		if(document.documentElement.clientWidth){
			windowWidth = document.documentElement.clientWidth; 
		} else {
			windowWidth = self.innerWidth;
		}
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowWidth = document.documentElement.clientWidth;
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowWidth = document.body.clientWidth;
		windowHeight = document.body.clientHeight;
	}	
	if(yScroll < windowHeight){
		pageHeight = windowHeight;
	} else { 
		pageHeight = yScroll;
	}
	if(xScroll < windowWidth){	
		pageWidth = xScroll;		
	} else {
		pageWidth = windowWidth;
	}
	arrayPageSize = new Array(pageWidth,pageHeight,windowWidth,windowHeight) 
	return arrayPageSize;
}


function getKey(e) {
	if (e == null) { // ie
		keycode = event.keyCode;
	} else { // mozilla
		keycode = e.which;
	}
	key = String.fromCharCode(keycode).toLowerCase();
	
	if(key == 'x'){
	}
}

function listenKey () {	document.onkeypress = getKey; }

Event.observe(document, 'dom:loaded', Popup.load);