//
  // 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/
  //

  // Customize your photo shuffle settings
  // 
  // * Surround the target <img /> with an anchor <a> and <div>. 
  //   specify unique id= in all three
  // * The first and final photo displayed is in the html <img> tag
  // * The image array contains paths to photos you want in the rotation. 
  //   If you want the first photo in the rotation, then it's best to
  //   put it as the final array image.  All photos must be same dimension
  // * The Href array contains the link you want associated with each image
  //   each image must have a corresponding link.
  // * The rotations variable specifies how many times to repeat array.
  //   images. zero is a valid rotation value.


  // End Customization section
  
  var gblDeckSize = gblImg.length;
 
  var gblOpacity = 100;
  var gblOnDeck = 0;
  var gblStartImg;
  var gblStartHref;
  var gblImageRotations = gblDeckSize * (gblRotations+1);
  var direction = 0;
  
  //window.onload = photoShufflerLaunch;
  
  function pausecomp(millis) 
	{
	var date = new Date();
	var curDate = null;
	
	do { curDate = new Date(); } 
	while(curDate-date < millis);
	} 

  function photoShufflerLaunch()
  {
  	var theimg = document.getElementById(gblPhotoShufflerImgId);
        gblStartImg = theimg.src; // save away to show as final image
  	var theanchor = document.getElementById(gblPhotoShufflerAnchorId);
        gblStartHref = theimg.href; // save away to show as final image
 
	
    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);
 
          gblImageRotations =  gblImg.length * (gblRotations+1);
	
	
	if ((direction==1) && (gblOpacity >=100))
	{
		
		
		//change direction
		direction = 0;
		//pausecomp(2000);
		
			
	}
	else if ((direction==0) && (gblOpacity<=0))
	{
		// shuffle to next photo
		photoShufflerShuffle();
		direction = 1;
		
		// change direction
			
	}

	if (direction==0)
	{
		gblOpacity -= fadeDelta;
	 	setOpacity(theimg,gblOpacity);
	  	setTimeout("photoShufflerFade()",30);  // 1/30th of a second
	}
	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);
	var theanchor = document.getElementById(gblPhotoShufflerAnchorId);
	
	
	// copy div background-image to img.src
	theimg.src = gblImg[gblOnDeck];
	theanchor.href = gblHref[gblOnDeck];
	// set img opacity to 100
		
	
        // shuffle the deck
	gblOnDeck = ++gblOnDeck % gblImg.length;
	// decrement rotation counter
	if (--gblImageRotations < 1)
	{
	  // insert start/final image if we're done
	  gblImg[gblOnDeck] = gblStartImg;
	  gblHref[gblOnDeck] = gblStartHref;
	}
 
	theimg.src = gblImg[gblOnDeck];
	
	theanchor.href = gblHref[gblOnDeck];
	
	// 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;
}