var img_sources = new Array(
	"../img/slideshow/current/1.jpg",
	"../img/slideshow/current/2.jpg",
	"../img/slideshow/current/3.jpg",
	"../img/slideshow/current/4.jpg",
	"../img/slideshow/current/5.jpg",
	"../img/slideshow/current/6.jpg"
	);
	
var img_text = new Array(
  	"Listening",
	"Working",
	"Presenting ideas",
	"Discussing ideas",
	"Learning",
	"Thinking"
	);

var counter = 0;
var fadeValue = 0;
var fadeInInterval;
var fadeOutInterval;
var imgStopInterval;

function nextImg()
{
	if(counter == img_sources.length)
	  counter = 0;
	document.getElementById("slide").src = img_sources[counter];
	document.getElementById("slideText").innerHTML = img_text[counter];
	counter++;
	if (navigator.appName.indexOf("Microsoft")!= -1  && parseInt(navigator.appVersion)>=4)
      document.getElementById("slide").filters.alpha.opacity=0;
    else
    {
      document.getElementById("slide").style.MozOpacity=0.0;
    }
	fadeInInterval = setInterval("fadeIn(document.getElementById(\"slide\"))", 30);	
}

function prevImg()
{
	if(counter == 0)
		counter = img_sources.length - 1;
    counter--;
	document.getElementById("slide").src = img_sources[counter];
	document.getElementById("slideText").innerHTML = img_text[counter];
}

function fadeIn(img)
{
  if (navigator.appName.indexOf("Microsoft")!= -1  && parseInt(navigator.appVersion)>=4)
  {
    img.filters.alpha.opacity=fadeValue;
  }
  else
  {
    img.style.MozOpacity=fadeValue/100;    
  }
  fadeValue += 2;
  if(fadeValue == 100)
  {
     clearInterval(fadeInInterval);
     //fadeOutInterval = setInterval("fadeOut(document.getElementById(\"slide\"))", 30);
     imgStopInterval = setInterval("imgStop()", 2000);
  }
}

function fadeOut(img)
{
  if (navigator.appName.indexOf("Microsoft")!= -1  && parseInt(navigator.appVersion)>=4)
  {
    img.filters.alpha.opacity=fadeValue;
  }
  else
  { 
      img.style.MozOpacity=fadeValue/100;
  }
  fadeValue -= 2;
  if(fadeValue == 0)
  {
    clearInterval(fadeOutInterval);
    nextImg();
  }
}

function imgStop()
{
  clearInterval(imgStopInterval);
  fadeOutInterval = setInterval("fadeOut(document.getElementById(\"slide\"))", 30);
}


function playSlideShow() {
   nextImg();	
}