<!--//--><![CDATA[//><!--
/* disclaimer 
 * 
 * Imagerotator script by Sabri for Typolight 
 * This script is based on CSS Linked Photo Shuffler v1.1 by Carl Camera - http://iamacamera.org 
 * SetOpacity Function and inpiration from Photo Fade by Richard Rutter - http://clagnut.com
 * License: Creative Commons Attribution 2.5  License - http://creativecommons.org/licenses/by/2.5/
 * 
 */

/* variables */
var gblPhotoShufflerDivId = "irdiv2";
var gblPhotoShufflerImgId = "irimg2";

var gblPauseSeconds = 3;
var gblFadeSeconds = 1;
var gblRotations = 999;

// End Customization section

var gblDeckSize = gblImg.length;
var gblOpacity = 100;
var gblOnDeck = 0;

var gblStartImg;
var gblImageRotations = gblDeckSize * (gblRotations+1);


/* functions */
//window.onload = photoShufflerLaunch;
//This was placed at the end of the 
setTimeout("photoShufflerLaunch()",gblPauseSeconds*1000);

function photoShufflerLaunch()
{
	var theimg = document.getElementById(gblPhotoShufflerImgId);
    gblStartImg = theimg.src; // save away to show as final image


document.getElementById(gblPhotoShufflerDivId).style.backgroundImage='url(' + gblImg[gblOnDeck] + ')';

setTimeout("photoShufflerFade()",gblPauseSeconds*1000);
}

function photoShufflerFade()
{
	var theimg = document.getElementById(gblPhotoShufflerImgId);

	// determine delta based on number of fade seconds
// the slower the fade the more increments needed
    var fadeDelta = 100 / (30 * gblFadeSeconds);

// fade top out to reveal bottom image
if (gblOpacity < 2*fadeDelta ) 
{
  gblOpacity = 100;
  // stop the rotation if we're done
  if (gblImageRotations < 1) return;
  photoShufflerShuffle();
  // pause before next fade
      setTimeout("photoShufflerFade()",gblPauseSeconds*1000);
}
else
{
  gblOpacity -= fadeDelta;
  setOpacity(theimg,gblOpacity);
  setTimeout("photoShufflerFade()",30);  // 1/30th of a second
}
}

function photoShufflerShuffle()
{
var thediv = document.getElementById(gblPhotoShufflerDivId);
var theimg = document.getElementById(gblPhotoShufflerImgId);



// copy div background-image to img.src
theimg.src = gblImg[gblOnDeck];


	

// set img opacity to 100
setOpacity(theimg,100);

// shuffle the deck
gblOnDeck = ++gblOnDeck % gblDeckSize;


// decrement rotation counter
if (--gblImageRotations < 1)
{
  // insert start/final image if we're done
  gblImg[gblOnDeck] = gblStartImg;

  }

// slide next image underneath
thediv.style.backgroundImage='url(' + gblImg[gblOnDeck] + ')';

}

function setOpacity(obj, opacity) {
  opacity = (opacity == 100)?99.999:opacity;
  
  // IE/Win
  obj.style.filter = "alpha(opacity:"+opacity+")";
  
  // Safari<1.2, Konqueror
  obj.style.KHTMLOpacity = opacity/100;

  // Older Mozilla and Firefox
  obj.style.MozOpacity = opacity/100;

  // Safari 1.2, newer Firefox and Mozilla, CSS3
  obj.style.opacity = opacity/100;
}

function fisherYates ( myArray ) {
  var i = myArray.length;
  if ( i == 0 ) return false;
  while ( --i ) {
     var j = Math.floor( Math.random() * ( i + 1 ) );
     var tempi = myArray[i];
     var tempj = myArray[j];
     myArray[i] = tempj;
     myArray[j] = tempi;
   }
}
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