//
	// CSS Photo Shuffler v1.0 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 a < div >. specify id= in both
	// * The first and final photo displayed is in the html <img> tag
	// * The 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 rotations variable specifies how many times to repeat array.
	//	 images. zero is a valid rotation value.

	var gblPhotoShufflerDivId = "rotator";
	var gblPhotoShufflerImgId = "photoimg"; 
	var gblImg = new Array(
		"/pics/index/rotator/2.jpg",
		"/pics/index/rotator/3.jpg",
		"/pics/index/rotator/4.jpg",
		"/pics/index/rotator/5.jpg",
		"/pics/index/rotator/1.jpg"
		);
	var gblPauseSeconds = 8.25;
	var gblFadeSeconds = 1.00;
	var gblRotations = 5;

	// End Customization section
	
	var gblDeckSize = gblImg.length;
	var gblOpacity = 100;
	var gblOnDeck = 0;
	var gblStartImg;
	var gblImageRotations = gblDeckSize * (gblRotations+1);

	window.onload = photoShufflerLaunch;
	
	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;
}