/*=========================*/

/*== SLIDE SHOW          ==*/

/*== version 0.56        ==*/

/*== Updated 03 May 2006 ==*/

/*=========================*/

var SLIDE_SHOW = 0;

var RANDOM_PHOTO = 1;

var slideshowContainer;

var sSlide;

var sCaption;

var ssSlides;

var ssSlideTotal;

var ssSlideTimer;

var ssOldSlide;

var ssFadeTimer;

var ssFade;

var ssTimerId;

var blank;





function PrepSlideEnvironment()

{

  tmpCookie = getCookie("Template");



  blank = new Image();

  blank.src = "/img/spacer.gif";



  if (typeof(slideshowType) == "undefined" || (slideshowType != SLIDE_SHOW && slideshowType != RANDOM_PHOTO))

    slideshowType = SLIDE_SHOW;



  if (slideshowType == RANDOM_PHOTO)

    randomSlides = true;



  if (typeof(slideshowContainerId) == "undefined")

    return false

  else if (typeof(slideshowContainerId) == "string")

    slideshowContainer = document.getElementById(slideshowContainerId);



  if (!slideshowContainer)

    return false;



  if (typeof(slideshowUrl) == "undefined" || typeof(slideshowUrl) != "string")

    return false;

  else

    slideshowUrl =  /(?:http:\/\/[^\/]+)?(\/\S+)/.exec(slideshowUrl)[1];



  if (/\/gallery\/[0-9]+/.test(slideshowUrl))

    slideSourceIsGallery = true;

  else

    slideSourceIsGallery = false;



  if (typeof(slideHeight) == "undefined" || isNaN(slideHeight))

    slideHeight = "200";



  if (typeof(slideWidth) == "undefined" || isNaN(slideWidth))

    slideWidth = "300";



  if (typeof(photoHeight) == "undefined" || isNaN(photoHeight))

    photoHeight = slideHeight;



  if (typeof(photoWidth) == "undefined" || isNaN(photoWidth))

    photoWidth = slideWidth;



  if (typeof(slideDuration) == "undefined" || isNaN(slideDuration))

    slideDuration = 3;



  if (typeof(firstSlideUrl) == "undefined" || typeof(firstSlideUrl) != "string")

    firstSlideUrl = blank.src;



  if (typeof(showSlideTransition) == "undefined" || typeof(showSlideTransition) != "boolean")

    showSlideTransition = true;

   

  if (typeof(resizeToPhoto) == "undefined" || typeof(resizeToPhoto) != "boolean")

    resizeToPhoto = true;



  if (typeof(quickStart) == "undefined" || typeof(quickStart) != "boolean")

    quickStart = true;



  if (typeof(randomSlides) == "undefined" || typeof(randomSlides) != "boolean")

    randomSlides = false;



  if (typeof(slideControls) == "undefined" || typeof(slideControls) != "boolean")

    slideControls = false;



  if (typeof(slideCaptions) == "undefined" || typeof(slideCaptions) != "boolean")

    slideCaptions = false;



  if (typeof(slidesClickable) == "undefined" || typeof(slidesClickable) != "boolean")

    slidesClickable = false;



  return true;

}





function loadSlideshow()

{

  if (!PrepSlideEnvironment())

    return false;



  slideshowContainer.innerHTML = '<img src="http://www.smugmug.com/img/spacer.gif" alt="" id="ssSlide" height="' + slideHeight + '" width="' + slideWidth + '" style="opacity: .99; background-image: url(' + firstSlideUrl + '); background-repeat: no-repeat; background-position: center;" />';



  if (slideCaptions)

    slideshowContainer.innerHTML += '<div id="ssCaption"></div>';



  if (slideControls)

    slideshowContainer.innerHTML += '<div id="ssControl"><a title="Previous Slide" id="ssPrev" class="ssBtn" href="javascript: void(0);" onclick="prevSlide();"><img src="/img/spacer.gif" border="0" /></a><a title="Next Slide" id="ssNext" class="ssBtn" href="javascript: void(0);" onclick="nextSlide();"><img src="/img/spacer.gif" border="0" /></a><a title="Pause Slideshow" id="ssPause" class="ssBtn" href="javascript: void(0);" onclick="pauseSlideshow();"><img src="/img/spacer.gif" border="0" /></a><a title="Resume Slideshow" id="ssPlay" class="ssBtn" href="javascript: void(0);" onclick="resumeSlideshow();"><img src="/img/spacer.gif" border="0" /></a></div>';



  sSlide = document.getElementById('ssSlide');

  sCaption = document.getElementById('ssCaption');



  if (slidesClickable) {

    sSlide.style.cursor = 'pointer';

  

    if (firstSlideUrl != blank.src)

      ssAddSlideClick(slideshowUrl);

  }



  ssSlides = new Array(null);

  ssSlideTotal = 0;

  ssSlideTimer = 0;

  ssOldSlide = 0;

  ssFadeTimer = 100;

  ssFade = "out";  



  if (slideSourceIsGallery)

    ajax_query(slideshowHandler, '/photos/sspopup.mg?AlbumID=' + /\/gallery\/([0-9]+)/.exec(slideshowUrl)[1], null, true);

  else {

    var postArray = new Array();

    postArray['TemplateID'] = '8';

    postArray['origin'] = slideshowUrl;

    ajax_query(slideshowHandler, '/homepage/templatechange.mg', postArray, true);

  }

}





function slideshowHandler(response)

{

  if (!slideSourceIsGallery) {

    if (tmpCookie && tmpCookie != "") {

      var postArray = new Array();

      postArray['TemplateID'] = tmpCookie;

      postArray['origin'] = slideshowUrl;

      ajax_query(function(){}, '/homepage/templatechange.mg', postArray, true);

    }

    else

      deleteCookie("Template", "/", "smugmug.com");

  }



  var re = /imageID\[\d+\] = "\d+";/g;

  var re2 = /width\[\d+\] = "\d+";/g;

  var re3 = /height\[\d+\] = "\d+";/g;

  var re4 = /caption\[\d+\] = ".*";/g;



  s = response.match(re); 

  w = response.match(re2);

  h = response.match(re3);

  c = response.match(re4);



  var oSlide;



  for (i = 0; i < s.length; i++)

  {

    oSlide = new Object;



    temp = s[i].split(/"/);

    oSlide.ImageId = temp[1];

    oSlide.File = 'http://upload.smugmug.com/photos/toolthumbs.mg?ImageID=' + temp[1] + '&tool=slideshowXL&winHeight=' + photoHeight + '&winWidth=' + photoWidth;

    oSlide.Gallery = slideshowUrl + '/1/' + oSlide.ImageId;



    temp = h[i].split(/"/);

    oSlide.Height = temp[1];



    temp = w[i].split(/"/);

    oSlide.Width = temp[1];



    temp = c[i].split(/"/);

    oSlide.Caption = temp[1];



    oSlide.Loaded = false;

 

    if ((oSlide.Width > photoWidth) || (oSlide.Height > photoHeight))

    {

      if (oSlide.Width >= oSlide.Height)

      {

         oSlide.Height = Math.round((oSlide.Height / oSlide.Width) * photoWidth);

         oSlide.Width = photoWidth;

      }

      else

      {

        oSlide.Width = Math.round((oSlide.Width / oSlide.Height) * photoHeight);

        oSlide.Height = photoHeight;

      }

    }



    ssSlideTotal = ssSlides.push(oSlide);

  }



  ssSlideTotal -= 1;



  if (randomSlides)

  {

    ssSlides.shift();

    ssSlides.shuffle();

    ssSlides.unshift(0);

  }



  if (quickStart)

    ssSlideTimer = (slideDuration * 1000);



  ssPrepSlide(1);

  window.setTimeout("ssPrepSlide(2);", 0);

  window.setTimeout("ssPrepSlide(ssSlideTotal);", 0);



  if (slideshowType == SLIDE_SHOW)

    ssPlaySlideshow();

  else

    ssSlideSwap(1);

}





function ssPauseSlideshow()

{

  window.clearTimeout(ssTimerId);

  ssTimerId = null;

}





function ssResumeSlideshow()

{

  if (!ssTimerId)

    ssTimerId = window.setTimeout("ssPlaySlideshow()", 10);

}





function ssPrepSlide(prep)

{

  if (ssSlides[prep].Loaded == false)

  {

    ssSlides[prep].Image = new Image();

    ssSlides[prep].Image.src = ssSlides[prep].File;

    ssSlides[prep].Loaded = true;

  }   

}





function ssMoveSlide(i) {

  ssSlideTimer = 0;

  ssFadeTimer = 100;

  ssTransition(ssFadeTimer);

  ssFade = "out";

  ssSlideSwap(i);                       

}





function ssPlaySlideshow()

{

  if (ssSlideTimer >= (slideDuration * 1000))

  {                

    if (ssFade == 'out')

      ssTransition(ssFadeTimer -= 10);                   

 

    if (ssFadeTimer == 0)

    {

      ssSlideSwap(1);

      ssFade = 'in';

    }

 

    if (ssFade == 'in')

      ssTransition(ssFadeTimer += 10);

 

    if (ssFadeTimer == 100)

    {

      ssSlideTimer = 0;

      ssFade = 'out';

    }

  }

  else

    ssSlideTimer += 10;

 

  ssTimerId = window.setTimeout("ssPlaySlideshow()", 10);

}





function ssTransition(opacity)

{

  if (showSlideTransition)

  {

    if (opacity != 100)

      sSlide.style.opacity = (opacity / 100);   

 

    // one case where mozilla sucks: the image will flash if you turn opacity up to 1 suddenly

    else

      sSlide.style.opacity = (.99);

 

    // only affects Win IE

    sSlide.style.filter = 'alpha(opacity=' + opacity + ')';



    if (sCaption) {

      sCaption.style.opacity = sSlide.style.opacity;

      sCaption.style.filter = sSlide.style.filter;

    }

  }

}





function ssSlideSwap(i)

{

  var newSlide = ssOldSlide + i;

 

  if (newSlide > ssSlideTotal)

    newSlide = 1;

 

  if (newSlide < 1)

    newSlide = ssSlideTotal;

 

  if (ssSlides[newSlide].Loaded != false)

  {

    document.images['ssSlide'].src = blank.src;

    sSlide.style.backgroundImage = 'url(' + ssSlides[newSlide].File + ')';

    if (resizeToPhoto)

    {

      document.images['ssSlide'].height = ssSlides[newSlide].Height;

      document.images['ssSlide'].width = ssSlides[newSlide].Width;

    }



    if (slidesClickable)

      ssAddSlideClick(ssSlides[newSlide].Gallery);

    

    if (slideCaptions)

      document.getElementById('ssCaption').innerHTML = ssSlides[newSlide].Caption;



    ssPrepSlide(newSlide < ssSlideTotal ? newSlide + i : 1);

    ssOldSlide = newSlide;

  }

  else

  {

    ssPrepSlide(newSlide);

    ssSlideSwap(i);

  }

}





function ssAddSlideClick(sUrl) {

  addEvent(sSlide, 'click', function(){location.href=sUrl;});

}





Array.prototype.shuffle = function()

{

  var len = this.length;

  var rand, temp, i;



  for (i = 0; i < len; i++)

  {

    rand = Math.floor(Math.random()*len);

    temp = this[i];

    this[i] = this[rand];

    this[rand] = temp;

  }

}





function pauseSlideshow()

{

  document.getElementById('ssPause').style.display = "none";

  document.getElementById('ssPlay').style.display = "inline";

  ssPauseSlideshow();

}





function resumeSlideshow()

{

  document.getElementById('ssPause').style.display = "inline";

  document.getElementById('ssPlay').style.display = "none";

  ssResumeSlideshow();

}





function prevSlide()

{

  pauseSlideshow();

  ssMoveSlide(-1);

}





function nextSlide()

{

  pauseSlideshow();

  ssMoveSlide(1);

}





function getCookie(name) {

  var start = document.cookie.indexOf(name + "=");

  var len = start + name.length + 1;

  

  if ((!start) && (name != document.cookie.substring(0, name.length)))

    return null;



  if (start == -1)

    return null;



  var end = document.cookie.indexOf(";", len);



  if (end == -1)

    end = document.cookie.length;



  return unescape(document.cookie.substring(len, end));

}





function deleteCookie(name, path, domain) {

  if (getCookie(name))

    document.cookie = name + "=" + ((path) ? ";path=" + path : "") + ((domain) ? ";domain=" + domain : "") + ";expires=Thu, 01-Jan-1970 00:00:01 GMT";

}