function navOver(object) {
 document.getElementById(object).style.backgroundColor="#7A1618";
}

function navOut(object) {
 document.getElementById(object).style.backgroundColor="";
}

function checkEmail(email) {
 if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,3})+$/.test(email.toLowerCase())) {
  return true;
 } else {
  return false;
 }
}