/*
 * Facebox (for jQuery)
 * version: 1.0 (12/19/2007)
 * @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 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')
 *
 *  This will open a facebox with "some html" as the content.
 *    
 *    jQuery.facebox(function() { ajaxes })
 *
 *  This will show a loading screen before the passed function is called,
 *  allowing for a better ajax experience.
 *
 */
(function($) {
   $.facebox = function(data) {
   $.facebox.init()
   $.facebox.loading()
   $.isFunction(data) ? data.call() : $.facebox.reveal(data)
 }

 $.facebox.settings = {
  loading_image : '../../images/loading.gif',
  close_image   : '../../images/closelabel.gif',
  image_types   : [ 'png', 'jpg', 'jpeg', 'gif' ],
  facebox_html  : '<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="close_link"><a href="#" class="close"><img src="" title="close" class="close_image" /></a></div><div class="content"></div></td><td class="b"/></tr><tr><td class="bl"/><td class="b"/><td class="br"/></tr></tbody></table></div></div>'
 }

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

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

       var pageScroll = $.facebox.getPageScroll()
       $('#facebox').css({
top:	pageScroll[1] + ($.facebox.getPageHeight() / 10),
left:	pageScroll[0]
}).show()

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

$.facebox.reveal = function(data, klass) {
  if (klass) $('#facebox .content').addClass(klass)
    $('#facebox .content').append(data)
      $('#facebox .loading').remove()
      $('#facebox .body').children().fadeIn('normal')
}

$.facebox.close = function() {
  $(document).unbind('keydown.facebox')
    $('#facebox').fadeOut(function() {
        $('#facebox .content').removeClass().addClass('content')
        })
  return false
}

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

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

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

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

            // div
            if (this.href.match(/#/)) {
              var url    = window.location.href.split('#')[0]
                var target = this.href.replace(url,'')
                $.facebox.reveal($(target).clone().show(), klass)

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

                // ajax
            } else {
              $.get(this.href, function(data) { $.facebox.reveal(data, klass) })
            }

        return false
      }

    this.click(click_handler)
      return this
  }

$.facebox.init = function() {
  if ($.facebox.settings.inited) {
    return true
  } else {
    $.facebox.settings.inited = true
  }

  $('body').append($.facebox.settings.facebox_html)

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

    $('#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(function(){
      $.facebox.close(); 
      return false
      })

  $('#facebox .close_image').attr('src', $.facebox.settings.close_image)
}

// getPageScroll() by quirksmode.com
$.facebox.getPageScroll = function() {
  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) 
}

// adapter from getPageSize() by quirksmode.com
$.facebox.getPageHeight = function() {
  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
}
})(jQuery);