var preload=new Image();
preload.src="img/btn330_pd2030_1.jpg";
preload.src="img/btn330_homeland_1.jpg";
preload.src="img/btn330_shorts_1.jpg";


function turnOnBtn(whichBtn)

	{

	

	if (whichBtn == "btn1")
	{
	document.images['btn1'].src = "img/btn330_pd2030_1.jpg"	

	}

	

	if (whichBtn == "btn2")
	{
	document.images['btn2'].src = "img/btn330_homeland_1.jpg"	

	}
	
		if (whichBtn == "btn3")
	{
	document.images['btn3'].src = "img/btn330_shorts_1.jpg"	

	}
	
	}


function turnOffBtn(whichBtn)
	{
	
		
		

	if (whichBtn == "btn1")
	{
	document.images['btn1'].src = "img/btn330_pd2030_0.jpg"	

	}

	

	if (whichBtn == "btn2")
	{
	document.images['btn2'].src = "img/btn330_homeland_0.jpg"	

	}
	
		if (whichBtn == "btn3")
	{
	document.images['btn3'].src = "img/btn330_shorts_0.jpg"	

	}

	
	}