function lightbox(action,idDiv)
{
	//document.getElementById('errMsg').style.display='none';
	if(action=='open'){
		document.getElementById(idDiv).style.display='block';
	  document.getElementById(idDiv).style.zIndex='1003';
		document.getElementById('fade').style.display='block'
	} else {
		document.getElementById(idDiv).style.display='none';
		document.getElementById(idDiv).style.zIndex='0';
		document.getElementById('fade').style.display='none'
	}
}

function submitForm(idDiv)
{
	if(document.vitamins_question.answer[0].checked || document.vitamins_question.answer[1].checked){
		lightbox('close',idDiv);
		document.vitamins_question.submit();
	} else {
		document.getElementById('errMsg').style.display='block';
	}
}