if (document.images){
		aboutusup = new Image();
		aboutusdown = new Image();
		getcertifiedup = new Image();
		getcertifieddown = new Image();
		onlinetestingup = new Image();
		onlinetestingdown = new Image();
		faqsup = new Image();
		faqsdown = new Image();
		registerup = new Image();
		registerdown = new Image();


		aboutusup.src = "images/aboutus_off.gif";
		aboutusdown.src = "images/aboutus_on.gif";
		getcertifiedup.src = "images/getcertified_off.gif";
		getcertifieddown.src = "images/getcertified_on.gif";
		onlinetestingup.src = "images/signin_off.gif";
		onlinetestingdown.src = "images/signin_on.gif";
		faqsup.src = "images/faqs_off.gif";
		faqsdown.src = "images/faqs_on.gif";
		registerup.src = "images/MailList_off.gif";
		registerdown.src = "images/MailList_on.gif";

		
		}
		function changeTo(imageName){
			if (document.images){
				if (imageName=="aboutus") document[imageName].src = aboutusdown.src;
				if (imageName=="getcertified") document[imageName].src = getcertifieddown.src;
				if (imageName=="onlinetesting") document[imageName].src = onlinetestingdown.src;
				if (imageName=="faqs") document[imageName].src = faqsdown.src;
				if (imageName=="register") document[imageName].src = registerdown.src;

				}
			}

		function changeBack(imageName){
			if (document.images){
				if (imageName=="aboutus") document[imageName].src = aboutusup.src;
				if (imageName=="getcertified") document[imageName].src = getcertifiedup.src;
				if (imageName=="onlinetesting") document[imageName].src = onlinetestingup.src;
				if (imageName=="faqs") document[imageName].src = faqsup.src;
				if (imageName=="register") document[imageName].src = registerup.src;

				}
			}

adPix = new Array
	("ads/AD1_long.jpg",
	"ads/AD2_long.gif",
	"ads/AD3_long.gif",
	"ads/AD4_long.gif",
	"ads/AD5_long.jpg")
	
imgCt = adPix.length

function choosePic() {
	/*
	if (document.images){
		randomNum = Math.floor
			((Math.random() * imgCt))
		document.adPicture.src = adPix[randomNum]
		setTimeout("choosePic()", 30 * 1000)
		}
	*/
	}
	
function openWin(url,height,width)
{
	window.open(url,"winDialog","width="+width+",height="+height+",scrolling=yes,toolbar=no,menubar=no,statusbar=no");
}

function SetDefaultButton(btn)
{
	if (document.all)
	{
		if (event.keyCode == 13)
		{
				event.returnValue=false;
				event.cancel = true;
				btn.click();
		} 
	} 
}