var step=1;
var whichimage=1;
var timeOutID;
var curStep=1;
var curBox = document.getElementById("box1");
var prevBox = document.getElementById("box2");
var prevBox = document.getElementById("box3");
/*
var prevBox = document.getElementById("box4");
*/

/* preload heros */
/*
var image1=new Image();
image1.src="/australia/learning/images/home/heroes/hero-home-resume.jpg";
var image2=new Image();
image2.src="/australia/learning/images/home/heroes/hero-home-virtualization.jpg";
var image3=new Image();
image3.src="/australia/learning/images/home/heroes/hero-home-NFR.jpg";
var image4=new Image();
image4.src="/australia/learning/images/home/heroes/hero-home-academic.jpg";
*/


var image1 = new Image();
image1.src = "/australia/learning/images/home/heroes/learning.jpg";
var image2 = new Image();
image2.src = "/australia/learning/images1/freeSoftware_horizontal.jpg";
var image3 = new Image();
image3.src = "/australia/learning/images/home/heroes/hero-home-NFR.jpg";


/* preload callout images */
var pic1= new Image(); 
pic1.src="/australia/learning/images/home/assets/left_normal.jpg";   
var pic2= new Image(); 
pic2.src="/australia/learning/images/home/assets/left_over.jpg";   
var pic3= new Image(); 
pic3.src="/australia/learning/images/home/assets/left_pressed.jpg"; 
var pic4= new Image(); 
pic4.src="/australia/learning/images/home/assets/mid_normal.jpg";   
var pic5= new Image(); 
pic5.src="/australia/learning/images/home/assets/mid_over.jpg";   
var pic6= new Image(); 
pic6.src="/australia/learning/images/home/assets/mid_pressed.jpg";
var pic7= new Image(); 
pic7.src="/australia/learning/images/home/assets/right_normal.jpg";   
var pic8= new Image(); 
pic8.src="/australia/learning/images/home/assets/right_over.jpg";   
var pic9= new Image(); 
pic9.src="/australia/learning/images/home/assets/right_pressed.jpg"; 

/* preload boxes and arrows */
var boxNormal= new Image(); 
boxNormal.src="/australia/learning/images/home/assets/Btn_Box_Normal.gif"; 
var boxSelected= new Image(); 
boxSelected.src="/australia/learning/images/home/assets/Btn_Box_Selected.gif"; 
var boxOver= new Image(); 
boxOver.src="/australia/learning/images/home/assets/Btn_Box_Rollover.gif"; 
var arrowNormal= new Image(); 
boxSelected.src="/australia/learning/images/home/assets/Btn_Next_Normal.gif"; 
var arrowOver= new Image(); 
boxOver.src="/australia/learning/images/home/assets/Btn_Next_Rollover.gif"; 
var arrowNormal2= new Image(); 
boxSelected.src="/australia/learning/images/home/assets/Btn_Prev_Normal.gif"; 
var arrowOver2= new Image(); 
boxOver.src="/australia/learning/images/home/assets/Btn_Prev_Rollover.gif"; 
														
function slidelink() {
/*
	if (step==1)
	window.location="http://www.microsoft.com/australia/learning/mcp/offers/secondshot/default.mspx"
	else if (step==2)
	window.location="http://www.microsoft.com/australia/learning/virtualization/default.mspx"
	else if (step==3)
	window.location="http://www.microsoft.com/australia/learning/sql/2008/offer/default.mspx"
	else if (step==4)
	window.location="http://www.microsoft.com/australia/learning/academic/default.mspx"
	*/
    if (step == 1)
        window.location = "http://www.microsoft.com/australia/learning/offers/latestoffers.mspx"
    else if (step == 2)
        window.location = "http://www.microsoft.com/australia/learning/offers/latestoffers.mspx"
    else if (step==3)
		window.location="http://www.microsoft.com/australia/learning/offers/latestoffers.mspx"

    
}


function slideit()
{
	if (!document.images)
	return
	document.images.slide.src=eval("image"+step+".src")
	
    if (timeOutID)
	{
	clearTimeout(timeOutID)
	};
    timeOutID = setTimeout("stepForward()",3000)
	
	
	prevBox = curBox;	
	curBox = document.getElementById("box" + step);
	
	if (curBox && prevBox){
	
	prevBox.src = "/australia/learning/images/home/assets/Btn_Box_Normal.gif";
	curBox.src = "/australia/learning/images/home/assets/Btn_Box_Selected.gif";
	};
	
}

function stepForward()
{
//	if (step<4){step++;}else{step=1;};
  if (step<3){step++;}else{step=1;};
//  if (step<4){step++;}else{step=1;};
    slideit();
}

function stepBack()
{
//	if (step==1){step=4;}else{step--;};
    if (step==1){step=3;}else{step--;};
 //   if (step==1){step=4;}else{step--;};	
    slideit();
}

function stepTo(curStep)
{
	step = curStep;
	slideit();
}

function overBox(obj, boxNum)
{
	if(boxNum != step)
	{
		obj.src='/australia/learning/images/home/assets/Btn_Box_Rollover.gif';
	};
}

function outBox(obj, boxNum)
{
	if(boxNum != step)
	{
		obj.src='/australia/learning/images/home/assets/Btn_Box_Normal.gif';
	};
}