/*
 * 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: {
		opacity : 0,
		overlay : true,
		loadingImage : '/img/facebox/loading.gif',
		closeImage : '/img/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="resources/images/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: $(window).width() / 2.75
		}).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,'')
	$.facebox.reveal($(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() {
	$(document).unbind('keydown.facebox')
	$('#facebox').fadeOut(function() {
	$('#facebox .content').removeClass().addClass('content')
	hideOverlay()
	$('#facebox .loading').remove()
	})
	})

})(jQuery);