function openWindow(theUrl, width, height, name)
{
	theWin = window.open(theUrl,name,'width='+width+',height='+height +', scrollbars=yes,status=no,toolbar=no,menubar=no,resizable=yes,location=no');
}

function swapImage (img,newImg)
{
	if (document.images)
	{
	img.src=newImg;
	}
}

function openIRS(){
	openWindow('http://www.irs.gov/pub/irs-pdf/p557.pdf',600,480,'winIRS');
}

function submitLogin(){
	if (event.keyCode == 13) 
	{        
		event.cancelBubble = true;
		event.returnValue = false;
		document.getElementById('cmdLogon').click();
    }

}

function submitReg(){
	if (event.keyCode == 13) 
	{        
		event.cancelBubble = true;
		event.returnValue = false;
		document.getElementById('cmdRegister').click();
    }
}

function toggleNVExemptBOS() {
	if (document.getElementById('optNVIF_1').checked) {
		document.getElementById('divNVExemptCode').style.display = '';
	}
	else {
		document.getElementById('divNVExemptCode').style.display = 'none';
	}
}