//

  // 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

  // * set background-repeat:no-repeat in CSS for the div

  // * 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 = "header";

  var gblPhotoShufflerImgId = "photoimg"; 

  var gblImg = new Array(

    "images/header_test.jpg?v=0",

    "images/welding.jpg?v=0",

    "images/electro.jpg?v=0",

    "images/CNC2.jpg?v=0",
	
    "images/mapmonde standards.jpg?v=0"

    );

  var gblPauseSeconds = 5;//7.25;

  var gblFadeSeconds =2;//.85;

  var gblRotations = 10;



  // 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;

  }