//WINDOW ONLOAD FN - dont clash with existing onloads
function addLoadEvent(func) {
  var oldonload = window.onload;
  if (typeof window.onload != 'function') {
    window.onload = func;
  } else {
    window.onload = function() {
      if (oldonload) {
        oldonload();
      }
      func();
    }
  }
}

addLoadEvent(initBannerPics);
addLoadEvent(imgBannereEventHandler);
addLoadEvent(swapPicture);



//SET UP ARRAYS
var bannerPics = new Array(3)
//var i=-1;
for (i=0; i <3; i++)
bannerPics[i]=new Array()

bannerPics[0][0]="/file_source/Images_new/Functions/HR/Banners/CareersHome1.jpg"
bannerPics[0][1]="/file_source/Images_new/Functions/HR/Banners/CareersHome2.jpg"
bannerPics[0][2]="/file_source/Images_new/Functions/HR/Banners/CareersHome3.jpg"
bannerPics[0][3]="/file_source/Images_new/Functions/HR/Banners/CareersHome4.jpg"

//PRELOAD IMGS
// counter
var i=0;
// create object
imageObj = new Image();
// start preloading
for(i=0; i<=2; i++) {
n = bannerPics[i].length;
var y=0;
for(y=0; y<=n; y++) {
    imageObj.src=bannerPics[i][y];
	}
}

var t=0;

var curImage=0;//assume always start on first in set
var curTab=Math.floor(Math.random()*3);//random 0 1 or 2
var nextImage=0;

function setStartTab(tabSelected) {
	clearTimeout(t);
	curImage=-1;
	curTab=tabSelected;
	swapPicture();
}

function swapPicture(){
  if (document.images){
	nextImage=curImage+1;
	
	if (nextImage>=bannerPics[curTab].length){
		nextImage=0;
		curTab=0;
		document.getElementById("control_0").className='normal';
		//curTab=0;
		//document.getElementById("control_"+curTab).className='current';
	}
	var target=0;
	target=document.getElementById("gradBannerImg");
	target.src=bannerPics[curTab][nextImage];
	curImage=nextImage;
	t=setTimeout("swapPicture()", 3000);
	}	
}

// event handling - add onclick etc events and control styles

function imgBannereEventHandler() {
		
			tab0 = document.getElementById("control_0");			
			
			
	
}

// set up controls
function initBannerPics() {
document.getElementById("control_0").className='current';
//document.getElementById("picController").style.display="block";
}