(function($) {
  $.furnishings = function(data, klass) {
    $.furnishings.loading()

    if (data.ajax) fillfurnishingsFromAjax(data.ajax)
    else if (data.image) fillfurnishingsFromImage(data.image)
    else if (data.div) fillfurnishingsFromHref(data.div)
    else if ($.isFunction(data)) data.call($)
    else $.furnishings.reveal(data, klass)
  }

  $.extend($.furnishings, {
    settings: {
      opacity      : 0,
      overlay      : true,
      loadingImage : 'loading.gif',
      closeImage   : 'closelabel.gif',
      imageTypes   : [ 'png', 'jpg', 'jpeg', 'gif' ],
      furnishingsHtml  : '\
    <div id="furnishings" 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="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 ($('#furnishings .loading').length == 1) return true
      showOverlay()

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

      $('#furnishings').css({
        top:	getPageScroll()[1] + (getPageHeight() / 10),
        left:	150
      }).show()

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

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

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

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

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

      var klass = this.rel.match(/furnishings\[?\.(\w+)\]?/)
      if (klass) klass = klass[1]

      fillfurnishingsFromHref(this.href, klass)
      return false
    }

    return this.click(clickHandler)
  }


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

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

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

    if (settings) $.extend($.furnishings.settings, settings)
    $('body').append($.furnishings.settings.furnishingsHtml)

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

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

    $('#furnishings .close').click($.furnishings.close)
    $('#furnishings .close_image').attr('src', $.furnishings.settings.closeImage)
  }
  

  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) 
  }

  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
  }

  function makeCompatible() {
    var $s = $.furnishings.settings

    $s.loadingImage = $s.loading_image || $s.loadingImage
    $s.closeImage = $s.close_image || $s.closeImage
    $s.imageTypes = $s.image_types || $s.imageTypes
    $s.furnishingsHtml = $s.furnishings_html || $s.furnishingsHtml
  }

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

    } else if (href.match($.furnishings.settings.imageTypesRegexp)) {
      fillfurnishingsFromImage(href, klass)
    } else {
      fillfurnishingsFromAjax(href, klass)
    }
  }

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

  function fillfurnishingsFromAjax(href, klass) {
    $.get(href, function(data) { $.furnishings.reveal(data, klass) })
  }

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

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

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

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

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

    $('#furnishings_overlay').fadeOut(200, function(){
      $("#furnishings_overlay").removeClass("furnishings_overlayBG")
      $("#furnishings_overlay").addClass("furnishings_hide") 
      $("#furnishings_overlay").remove()
    })
    
    return false
  }
  $(document).bind('close.furnishings', function() {
    $(document).unbind('keydown.furnishings')
    $('#furnishings').fadeOut(function() {
      $('#furnishings .content').removeClass().addClass('content')
      hideOverlay()
      $('#furnishings .loading').remove()
    })
  })

})(jQuery);