function lit(item, value){
item.style.backgroundColor = value;
}

function disp(divName){
el = document.getElementById(divName);
(el.style.display == "none") ? el.style.display='block':el.style.display='none';
}

function showAnswer(divName){
el = document.getElementById(divName);
(el.style.display == "none") ? el.style.display='block':el.style.display='none';
}