/*
 * Facebox (for jQuery)
 * version: 1.2 (05/05/2008)
 * @requires jQuery v1.2 or later
 *
 * Examples at http://famspam.com/facebox/
 *
 * Licensed under the MIT:
 *	 http://www.opensource.org/licenses/mit-license.php
 *
 * Copyright 2007, 2008 Chris Wanstrath [ chris@ozmm.org ]
 *
 * Usage:
 *	
 *	jQuery(document).ready(function() {
 *	jQuery('a[rel*=facebox]').facebox() 
 *	})
 *
 *	<a href="#terms" rel="facebox">Terms</a>
 *	Loads the #terms div in the box
 *
 *	<a href="terms.html" rel="facebox">Terms</a>
 *	Loads the terms.html page in the box
 *
 *	<a href="terms.png" rel="facebox">Terms</a>
 *	Loads the terms.png image in the box
 *
 *
 *	You can also use it programmatically:
 * 
 *	jQuery.facebox('some html')
 *
 *	The above will open a facebox with "some html" as the content.
 *	
 *	jQuery.facebox(function($) { 
 *		$.get('blah.html', function(data) { $.facebox(data) })
 *	})
 *
 *	The above will show a loading screen before the passed function is called,
 *	allowing for a better ajaxy experience.
 *
 *	The facebox function can also display an ajax page or image:
 *	
 *	jQuery.facebox({ ajax: 'remote.html' })
 *	jQuery.facebox({ image: 'dude.jpg' })
 *
 *	Want to close the facebox?	Trigger the 'close.facebox' document event:
 *
 *	jQuery(document).trigger('close.facebox')
 *
 *	Facebox also has a bunch of other hooks:
 *
 *	loading.facebox
 *	beforeReveal.facebox
 *	reveal.facebox (aliased as 'afterReveal.facebox')
 *	init.facebox
 *
 *	Simply bind a function to any of these hooks:
 *
 *	 $(document).bind('reveal.facebox', function() { ...stuff to do after the facebox and contents are revealed... })
 *
 */
(function($) {
	$.facebox = function(data, klass) {
	$.facebox.loading()

	if (data.ajax) fillFaceboxFromAjax(data.ajax)
	else if (data.image) fillFaceboxFromImage(data.image)
	else if (data.div) fillFaceboxFromHref(data.div)
	else if ($.isFunction(data)) data.call($)
	else $.facebox.reveal(data, klass)
	}

	/*
	 * Public, $.facebox methods
	 */

	$.extend($.facebox, {
	settings: {
		dom_data: null,
		dom: null, 
		opacity		: 0,
		overlay		: true,
		loadingImage : 'facebox/loading.gif',
		closeImage	 : 'facebox/closelabel.gif',
		imageTypes	 : [ 'png', 'jpg', 'jpeg', 'gif' ],
		faceboxHtml	: '\
	<div id="facebox" style="display:none;"> \
		<div class="popup"> \
		<table> \
			<tbody> \
			<tr> \
				<td class="tl"/><td class="b"/><td class="tr"/> \
			</tr> \
			<tr> \
				<td class="b"/> \
				<td class="body"> \
				<div class="content"> \
				</div> \
				<div class="footer"> \
					<a href="#" class="close"> \
					<img src="facebox/closelabel.gif" title="close" class="close_image" /> \
					</a> \
				</div> \
				</td> \
				<td class="b"/> \
			</tr> \
			<tr> \
				<td class="bl"/><td class="b"/><td class="br"/> \
			</tr> \
			</tbody> \
		</table> \
		</div> \
	</div>'
	},

	loading: function() {
		init()
		if ($('#facebox .loading').length == 1) return true
		showOverlay()

		$('#facebox .content').empty()
		$('#facebox .body').children().hide().end().
		append('<div class="loading"><img src="'+$.facebox.settings.loadingImage+'"/></div>')

		$('#facebox').css({
		top:	getPageScroll()[1] + (getPageHeight() / 10),
		left:	385.5
		}).show()

		$(document).bind('keydown.facebox', function(e) {
		if (e.keyCode == 27) $.facebox.close()
		return true
		})
		$(document).trigger('loading.facebox')
	},

	reveal: function(data, klass) {
		$(document).trigger('beforeReveal.facebox')
		if (klass) $('#facebox .content').addClass(klass)
		$('#facebox .content').append(data)
		$('#facebox .loading').remove()
		$('#facebox .body').children().fadeIn('normal')
		$('#facebox').css('left', $(window).width() / 2 - ($('#facebox table').width() / 2))
		$(document).trigger('reveal.facebox').trigger('afterReveal.facebox')
	},

	close: function() {
		$(document).trigger('close.facebox')
		return false
	}
	})

	/*
	 * Public, $.fn methods
	 */

	$.fn.facebox = function(settings) {
	init(settings)

	function clickHandler() {
		$.facebox.loading(true)

		// support for rel="facebox.inline_popup" syntax, to add a class
		// also supports deprecated "facebox[.inline_popup]" syntax
		var klass = this.rel.match(/facebox\[?\.(\w+)\]?/)
		if (klass) klass = klass[1]

		fillFaceboxFromHref(this.href, klass)
		return false
	}

	return this.click(clickHandler)
	}

	/*
	 * Private methods
	 */

	// called one time to setup facebox on this page
	function init(settings) {
	if ($.facebox.settings.inited) return true
	else $.facebox.settings.inited = true

	$(document).trigger('init.facebox')
	makeCompatible()

	var imageTypes = $.facebox.settings.imageTypes.join('|')
	$.facebox.settings.imageTypesRegexp = new RegExp('\.' + imageTypes + '$', 'i')

	if (settings) $.extend($.facebox.settings, settings)
	$('body').append($.facebox.settings.faceboxHtml)

	var preload = [ new Image(), new Image() ]
	preload[0].src = $.facebox.settings.closeImage
	preload[1].src = $.facebox.settings.loadingImage

	$('#facebox').find('.b:first, .bl, .br, .tl, .tr').each(function() {
		preload.push(new Image())
		preload.slice(-1).src = $(this).css('background-image').replace(/url\((.+)\)/, '$1')
	})

	$('#facebox .close').click($.facebox.close)
	$('#facebox .close_image').attr('src', $.facebox.settings.closeImage)
	}
	
	// getPageScroll() by quirksmode.com
	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;	
	}
	return new Array(xScroll,yScroll) 
	}

	// Adapted from getPageSize() by quirksmode.com
	function getPageHeight() {
	var windowHeight
	if (self.innerHeight) {	// all except Explorer
		windowHeight = self.innerHeight;
	} else if (document.documentElement && document.documentElement.clientHeight) { // Explorer 6 Strict Mode
		windowHeight = document.documentElement.clientHeight;
	} else if (document.body) { // other Explorers
		windowHeight = document.body.clientHeight;
	}	
	return windowHeight
	}

	// Backwards compatibility
	function makeCompatible() {
	var $s = $.facebox.settings

	$s.loadingImage = $s.loading_image || $s.loadingImage
	$s.closeImage = $s.close_image || $s.closeImage
	$s.imageTypes = $s.image_types || $s.imageTypes
	$s.faceboxHtml = $s.facebox_html || $s.faceboxHtml
	}

	// Figures out what you want to display and displays it
	// formats are:
	//	 div: #id
	//	 image: blah.extension
	//	ajax: anything else
	function fillFaceboxFromHref(href, klass) {
	// div
	if (href.match(/#/)) {
		var url	= window.location.href.split('#')[0]
		var target = href.replace(url,'')
		$.facebox.settings.dom = target;
		$.facebox.settings.dom_data = $(target).children();
		$.facebox.reveal($(target).children().show(), klass) 
		$.facebox.reveal($(target).clone().show(), klass)

	// image
	} else if (href.match($.facebox.settings.imageTypesRegexp)) {
		fillFaceboxFromImage(href, klass)
	// ajax
	} else {
		fillFaceboxFromAjax(href, klass)
	}
	}

	function fillFaceboxFromImage(href, klass) {
	var image = new Image()
	image.onload = function() {
		$.facebox.reveal('<div class="image"><img src="' + image.src + '" /></div>', klass)
	}
	image.src = href
	}

	function fillFaceboxFromAjax(href, klass) {
	$.get(href, function(data) { $.facebox.reveal(data, klass) })
	}

	function skipOverlay() {
	return $.facebox.settings.overlay == false || $.facebox.settings.opacity === null 
	}

	function showOverlay() {
	if (skipOverlay()) return

	if ($('facebox_overlay').length == 0) 
		$("body").append('<div id="facebox_overlay" class="facebox_hide"></div>')

	$('#facebox_overlay').hide().addClass("facebox_overlayBG")
		.css('opacity', $.facebox.settings.opacity)
		.click(function() { $(document).trigger('close.facebox') })
		.fadeIn(200)
	return false
	}

	function hideOverlay() {
	if (skipOverlay()) return

	$('#facebox_overlay').fadeOut(200, function(){
		$("#facebox_overlay").removeClass("facebox_overlayBG")
		$("#facebox_overlay").addClass("facebox_hide") 
		$("#facebox_overlay").remove()
	})
	
	return false
	}

	/*
	 * Bindings
	 */
 
	$(document).bind('close.facebox', function() {
	if($.facebox.settings.dom){
	$($.facebox.settings.dom).append($.facebox.settings.dom_data);

	$.facebox.settings.dom = null;
	$.facebox.settings.dom_data = null;
	}
	$(document).unbind('keydown.facebox')
	$('#facebox').fadeOut(function() {
		$('#facebox .content').removeClass().addClass('content')
		hideOverlay()
		$('#facebox .loading').remove()
	})
	})

})(jQuery);