/*
 * Thickbox 3.1 - One Box To Rule Them All.
 * By Cody Lindley (http://www.codylindley.com)
 * Copyright (c) 2007 cody lindley
 * Licensed under the MIT License: http://www.opensource.org/licenses/mit-license.php
 *
 * modified by KOSUGI Tomo
 */

$(function() {

    $('a.thickbox').click(
      function() {
        var t = this.title || this.name || null;
        var a = this.href || this.alt;
        var g = this.rel || false;
        tb_show(t,a,g);
        this.blur();
        return false;
      });

    function tb_show(caption, url, imageGroup) {//function called when the user clicks on a thickbox link

      try {
        if (typeof document.body.style.maxHeight === "undefined") {//if IE 6
          $("body", "html").css({height: "100%", width: "100%"});
          $("html").css("overflow", "hidden");
          if (document.getElementById("TB_HideSelect") === null) {//iframe to hide select elements in ie6
            $("body").append("<iframe id='TB_HideSelect'></iframe><div id='TB_overlay'></div><div id='TB_window'></div>");
            $("#TB_overlay").click(tb_remove);
          }
        }
        else {//all others
          if(document.getElementById("TB_overlay") === null){
            $("body").append("<div id='TB_overlay'></div><div id='TB_window'></div>");
            $("#TB_overlay").click(tb_remove);
          }
        }

        $("#TB_overlay").addClass("TB_overlayBG");//use background and opacity

        if (caption===null) {caption="";}

        var urlString = /\.jpg$|\.jpeg$|\.png$|\.gif$|\.bmp$/;
        if (url.replace(/\?.*$/, '').toLowerCase().match(urlString)) {

          TB_PrevCaption = "";
          TB_PrevURL = "";
          TB_PrevHTML = "";
          TB_NextCaption = "";
          TB_NextURL = "";
          TB_NextHTML = "";
          TB_imageCount = "";
          TB_FoundURL = false;
          if (imageGroup) {
            TB_TempArray = $("a[@rel="+imageGroup+"]").get();
            for (TB_Counter = 0; ((TB_Counter < TB_TempArray.length) && (TB_NextHTML === "")); TB_Counter++) {
              var urlTypeTemp = TB_TempArray[TB_Counter].href.toLowerCase().match(urlString);
              if (!(TB_TempArray[TB_Counter].href == url)) {
                if (TB_FoundURL) {
                  TB_NextCaption = TB_TempArray[TB_Counter].title;
                  TB_NextURL = TB_TempArray[TB_Counter].href;
                  TB_NextHTML = "<span id='TB_next'>&nbsp;&nbsp;<a href='#'>Next &gt;</a></span>";
                }
                else {
                  TB_PrevCaption = TB_TempArray[TB_Counter].title;
                  TB_PrevURL = TB_TempArray[TB_Counter].href;
                  TB_PrevHTML = "<span id='TB_prev'>&nbsp;&nbsp;<a href='#'>&lt; Prev</a></span>";
                }
              }
              else {
                TB_FoundURL = true;
                TB_imageCount = "Image " + (TB_Counter + 1) +" of "+ (TB_TempArray.length);
              }
            }
          }

          imgPreloader = new Image();
          imgPreloader.onload = function() {

            imgPreloader.onload = null;

            // Resizing large images - orginal by Christian Montoya edited by me.
            var pagesize = tb_getPageSize();
            var x = pagesize[0] - 150;
            var y = pagesize[1] - 150;
            var imageWidth = imgPreloader.width;
            var imageHeight = imgPreloader.height;
            if (imageWidth > x) {
              imageHeight = imageHeight * (x / imageWidth);
              imageWidth = x;
              if (imageHeight > y) {
                imageWidth = imageWidth * (y / imageHeight);
                imageHeight = y;
              }
            } else if (imageHeight > y) {
              imageWidth = imageWidth * (y / imageHeight);
              imageHeight = y;
              if (imageWidth > x) {
                imageHeight = imageHeight * (x / imageWidth);
                imageWidth = x;
              }
            }
            // End Resizing

            TB_WIDTH = imageWidth + 30;
            TB_HEIGHT = imageHeight + 60;
            $("#TB_window").append("<a href='' id='TB_ImageOff' title='Close'><img id='TB_Image' src='"+url+"' width='"+imageWidth+"' height='"+imageHeight+"' alt='"+caption+"'/></a>" + "<div id='TB_caption'>"+caption+"<div id='TB_secondLine'>" + TB_imageCount + TB_PrevHTML + TB_NextHTML + "</div></div><div id='TB_closeWindow'><a href='#' id='TB_closeWindowButton' title='Close'>close</a> or Esc Key</div>");

            $("#TB_closeWindowButton").click(tb_remove);

            if (!(TB_PrevHTML === "")) {
              function goPrev() {
                if($(document).unbind("click",goPrev)){$(document).unbind("click",goPrev);}
                $("#TB_window").remove();
                $("body").append("<div id='TB_window'></div>");
                tb_show(TB_PrevCaption, TB_PrevURL, imageGroup);
                return false;
              }
              $("#TB_prev").click(goPrev);
            }

            if (!(TB_NextHTML === "")) {
              function goNext() {
                $("#TB_window").remove();
                $("body").append("<div id='TB_window'></div>");
                tb_show(TB_NextCaption, TB_NextURL, imageGroup);
                return false;
              }
              $("#TB_next").click(goNext);
            }

            document.onkeydown = function(e) {
              if (e == null) { // ie
                keycode = event.keyCode;
              }
              else { // mozilla
                keycode = e.which;
              }
              if (keycode == 27) { // close
                tb_remove();
              }
              else if (keycode == 190) { // display previous image
                if (!(TB_NextHTML == "")) {
                  document.onkeydown = "";
                  goNext();
                }
              }
              else if (keycode == 188) { // display next image
                if(!(TB_PrevHTML == "")){
                  document.onkeydown = "";
                  goPrev();
                }
              }
            };

            tb_position();
            $("#TB_ImageOff").click(tb_remove);
            $("#TB_window").css({display:"block"}); //for safari using css instead of show
          };
          imgPreloader.src = url;
        }

        document.onkeyup = function(e) {
          if (e == null) { // ie
            keycode = event.keyCode;
          }
          else { // mozilla
            keycode = e.which;
          }
          if (keycode == 27) { // close
            tb_remove();
          }
        };
      }
      catch(e) {}
    }

    function tb_remove() {
      $("#TB_imageOff").unbind("click");
      $("#TB_closeWindowButton").unbind("click");
      $("#TB_window").fadeOut("fast",function(){$('#TB_window,#TB_overlay,#TB_HideSelect').trigger("unload").unbind().remove();});
      if (typeof document.body.style.maxHeight == "undefined") {//if IE 6
        $("body", "html").css({height: "auto", width: "auto"});
        $("html").css("overflow", "");
      }
      document.onkeydown = "";
      document.onkeyup = "";
      return false;
    }

    function tb_position() {
      $("#TB_window").css({marginLeft: '-' + parseInt((TB_WIDTH / 2),10) + 'px', width: TB_WIDTH + 'px'});
      if ( !(jQuery.browser.msie && jQuery.browser.version < 7)) { // take away IE6
        $("#TB_window").css({marginTop: '-' + parseInt((TB_HEIGHT / 2),10) + 'px'});
      }
    }

    function tb_getPageSize() {
      var de = document.documentElement;
      var w = window.innerWidth || self.innerWidth || (de&&de.clientWidth) || document.body.clientWidth;
      var h = window.innerHeight || self.innerHeight || (de&&de.clientHeight) || document.body.clientHeight;
      arrayPageSize = [w,h];
      return arrayPageSize;
    }
  });