// JavaScript For QU Department Slide Shows

var numSlides;
var currentSlide = 0;
var newSlide = 0;
var timeoutID = '';
var autoshow = 'YES';    // YES gets automatic show, anything else and its off
var slidetimeout = 15000;  // Timeout between images. 10000 = 10 seconds

var ximage;

function setUp(SlideCount)
  {
  
  numSlides = SlideCount;
  var index = Math.floor(Math.random() * numSlides) + 1;
  var FileSystemObject;
  var GotImage = "NO";
  var ForReading = 1;
  var FileRead, FileData
  currentSlide = numSlides;

//  alert('Setup: ' + currentSlide + ' -  ' + numSlides);
  
  ximage = 'image' + index;
  currentSlide = index;
  switchSlide(1);
  }
  
function switchSlide(sDir) 
  {
//  alert('SwitchSlide: ' + currentSlide + ' -  ' + numSlides);
//  var newSlide = currentSlide + sDir
  var FileName;
  if (sDir == 1) {
    newSlide = currentSlide + 1;
	}
	else
	{
	newSlide = currentSlide - 1;
	}
  if (!newSlide) {
    newSlide = numSlides;
	}
  if (newSlide > numSlides) {
    newSlide = 1;
	}
  if (newSlide < 0) {
    newSlide = numSlides;
	}

  if (numSlides == 1) {
    newSlide = numSlides;
	}
	
//  document.getElementById("image"+newSlide).style.visibility="visible";
// Home only  document.getElementById("image"+newSlide+"small").style.visibility="visible";
  
  document.getElementById("image"+currentSlide).style.visibility="hidden";
  document.getElementById("image"+newSlide).style.visibility="visible";
// Home only  document.getElementById("image"+currentSlide+"small").style.visibility="hidden";
  FileName = 'image' + newSlide + 'Text';
//  document.getElementById("SlideText").innerHTML = FileName;  // image5Text;

 
  if (newSlide == 1) {
    document.getElementById("SlideText").innerHTML = image1Text;
	document.getElementById("HeadText").innerHTML = image1Head;
	}
  if (newSlide == 2) {
    document.getElementById("SlideText").innerHTML = image2Text;
	document.getElementById("HeadText").innerHTML = image2Head;
	}
  if (newSlide == 3) {
    document.getElementById("SlideText").innerHTML = image3Text;
	document.getElementById("HeadText").innerHTML = image3Head;
	}
  if (newSlide == 4) {
    document.getElementById("SlideText").innerHTML = image4Text;
	document.getElementById("HeadText").innerHTML = image4Head;
	}
  if (newSlide == 5) {
    document.getElementById("SlideText").innerHTML = image5Text;
	document.getElementById("HeadText").innerHTML = image5Head;
	}
  if (newSlide == 6) {
    document.getElementById("SlideText").innerHTML = image6Text;
	document.getElementById("HeadText").innerHTML = image6Head;
	}
  if (newSlide == 7) {
    document.getElementById("SlideText").innerHTML = image7Text;
	document.getElementById("HeadText").innerHTML = image7Head;
	}
  if (newSlide == 8) {
    document.getElementById("SlideText").innerHTML = image8Text;
	document.getElementById("HeadText").innerHTML = image8Head;
	}
  if (newSlide == 9) {
    document.getElementById("SlideText").innerHTML = image9Text;
	document.getElementById("HeadText").innerHTML = image9Head;
	}
  if (newSlide == 10) {
    document.getElementById("SlideText").innerHTML = image10Text;
	document.getElementById("HeadText").innerHTML = image10Head;
	}
  if (newSlide == 11) {
    document.getElementById("SlideText").innerHTML = image11Text;
	document.getElementById("HeadText").innerHTML = image11Head;
	}	
  if (newSlide == 12) {
    document.getElementById("SlideText").innerHTML = image12Text;
	document.getElementById("HeadText").innerHTML = image12Head;
	}
  if (newSlide == 13) {
    document.getElementById("SlideText").innerHTML = image13Text;
	document.getElementById("HeadText").innerHTML = image13Head;
	}
  if (newSlide == 14) {
    document.getElementById("SlideText").innerHTML = image14Text;
	document.getElementById("HeadText").innerHTML = image14Head;
	}
  if (newSlide == 15) {
    document.getElementById("SlideText").innerHTML = image15Text;
	document.getElementById("HeadText").innerHTML = image15Head;
	}
  if (newSlide == 16) {
    document.getElementById("SlideText").innerHTML = image16Text;
	document.getElementById("HeadText").innerHTML = image16Head;
	}
  if (newSlide == 17) {
    document.getElementById("SlideText").innerHTML = image17Text;
	document.getElementById("HeadText").innerHTML = image17Head;
	}
  if (newSlide == 18) {
    document.getElementById("SlideText").innerHTML = image18Text;
	document.getElementById("HeadText").innerHTML = image18Head;
	}
  if (newSlide == 19) {
    document.getElementById("SlideText").innerHTML = image19Text;
	document.getElementById("HeadText").innerHTML = image19Head;
	}
  if (newSlide == 20) {
    document.getElementById("SlideText").innerHTML = image20Text;
	document.getElementById("HeadText").innerHTML = image20Head;
	}		
	
  currentSlide = newSlide;
  if (timeoutID) {
    window.clearTimeout(timeoutID);
	}
  if (autoshow == 'YES') {
   timeoutID = window.setTimeout('switchSlide(1)', slidetimeout);
   }

  }