(function($) {
  $.boxas = function(data, klass) {
    $.boxas.init()
    $.boxas.loading()
    $.isFunction(data) ? data.call($) : $.boxas.reveal(data, klass)
  }

  $.boxas.settings = {
    loading_image : 'registracija/suaugusiems/failai/loading.gif',
    close_image   : 'registracija/suaugusiems/failai/close.gif',
    image_types   : [ 'png', 'jpg', 'jpeg', 'gif' ],
    boxas_html  : '\
  <div id="boxas" 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="'+this.close_image+'" 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>'
  }

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

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

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

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

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

  $.boxas.close = function() {
    $(document).trigger('close.boxas')
    return false
  }

  $(document).bind('close.boxas', function() {
    $(document).unbind('keydown.boxas')
    $('#boxas').fadeOut(function() {
      $('#boxas .content').removeClass().addClass('content')
    })
  })

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

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

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

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

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

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

      } else {
        $.get(this.href, function(data) { $.boxas.reveal(data, klass) })
      }

      return false
    }

    this.click(click_handler)
    return this
  }

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

    if (settings) $.extend($.boxas.settings, settings)
    $('body').append($.boxas.settings.boxas_html)

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

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

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

  $.boxas.getPageScroll = function() {
    var xScroll, yScroll;
    if (self.pageYOffset) {
      yScroll = self.pageYOffset;
      xScroll = self.pageXOffset;
    } else if (document.documentElement && document.documentElement.scrollTop) {
      yScroll = document.documentElement.scrollTop;
      xScroll = document.documentElement.scrollLeft;
    } else if (document.body) {
      yScroll = document.body.scrollTop;
      xScroll = document.body.scrollLeft;	
    }
    return new Array(xScroll,yScroll) 
  }

  $.boxas.getPageHeight = function() {
    var windowHeight
    if (self.innerHeight) {
      windowHeight = self.innerHeight;
    } else if (document.documentElement && document.documentElement.clientHeight) { 
      windowHeight = document.documentElement.clientHeight;
    } else if (document.body) {
      windowHeight = document.body.clientHeight;
    }	
    return windowHeight
  }
})(jQuery);