/*
 * 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')
 *    jQuery.facebox('some html', 'my-groovy-style')
 *
 *  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, an image, or the contents of a div:
 *
 *    jQuery.facebox({ ajax: 'remote.html' })
 *    jQuery.facebox({ ajax: 'remote.html' }, 'my-groovy-style')
 *    jQuery.facebox({ image: 'stairs.jpg' })
 *    jQuery.facebox({ image: 'stairs.jpg' }, 'my-groovy-style')
 *    jQuery.facebox({ div: '#box' })
 *    jQuery.facebox({ div: '#box' }, 'my-groovy-style')
 *
 *  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
 *    afterClose.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, klass)
		else if (data.image) fillFaceboxFromImage(data.image, klass)
		else if (data.div) fillFaceboxFromHref(data.div, klass)
		else if (data.iframe) fillFaceboxFromHref(data.iframe.url, klass,'iframe|'+data.iframe.height+"|"+data.iframe.width)
		else if ($.isFunction(data)) data.call($)
		else $.facebox.reveal(data, klass)
  	}

	/*
	* Public, $.facebox methods
	*/

	$.extend($.facebox, {
		settings: {
			opacity      : 0.2,
			overlay      : true,
			loadingImage : 'images/facebox/loading.gif',
			closeImage   : 'images/facebox/closelabel.png',
			imageTypes   : [ 'png', 'jpg', 'jpeg', 'gif' ],
			faceboxHtml  : '\
			<div id="facebox" style="display:none;"> \
			<div class="popup"> \
			<div class="content"> \
			</div> \
			<a href="#" class="close"><img src="images/facebox/closelabel.png" title="close" class="close_image" /></a> \
			</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 - 205
			}).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 .popup').width() / 2))
			$(document).trigger('reveal.facebox').trigger('afterReveal.facebox')
		},
	
		close: function() {
			$(document).trigger('close.facebox')
			return false
		}
	})
	
	/*
	* Public, $.fn methods
	*/

  	$.fn.facebox = function(settings) {
		if ($(this).length == 0) return
	
		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,this.rev)
			return false
		}
	
		return this.bind('click.facebox', 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').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,rev) {
   		// div
		var revSplit=rev.split('|');
    	if (href.match(/#/)) {
			var url = window.location.href.split('#')[0];
			var target = href.replace(url,'');
			if (target == '#') return;
			$.facebox.reveal($(target).html(), klass);
    	// image
    	} else if (href.match($.facebox.settings.imageTypesRegexp)) {
      		fillFaceboxFromImage(href, klass);
			// iframe 
		} else if (revSplit[0] == 'iframe') {
			if (revSplit.length<2){
				revSplit.push('500')
			}
			if (revSplit.length<3){
				revSplit.push('500')
			}
			fillFaceboxFromIframe(href, klass, revSplit[1], revSplit[2])		
    	// 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 fillFaceboxFromIframe(href, klass, height, width) {
		$.facebox.reveal('<iframe scrolling="yes" marginwidth="0" width="' + width + '" height="' + height + '" frameborder="0" src="' + href + '" marginheight="0"></iframe>', 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')
			$('#facebox .loading').remove()
			$(document).trigger('afterClose.facebox')
		})
		hideOverlay()
	})
})(jQuery);