function passWord() {
  var testV = 1;
  var pass1 = prompt('What does the M stand for in MOD?',' ');
  while (testV < 3) {
    if (!pass1)
    history.go(-1);
    if (pass1.toLowerCase() == "mesial") {
      alert('Welcome Dental Professional!');
      window.open('http://www.cosmeticdentist.net/Contact-Cosmetic-Dentist-Professionals.html','_self');
      break;
    }
    testV+=1;
    var pass1 =
    prompt('Access Denied - Incorrect Answer','m');
  }
  if (pass1.toLowerCase()!="password" & testV ==3)
  history.go(-1);
  return " ";
}