// JavaScript Document

function valbutton(thisform) {
  
//Name
nameOpt = thisform.person.value;
  if (nameOpt == "") {
    alert("Please enter your name.");
    return false;
  }
  
//Email
emailOpt = thisform.email.value;
  if (emailOpt == "") {
    alert("Please enter your email address.");
    return false;
  }

// Verification
  verifOpt = thisform.verif.value;
  if (verifOpt != "3") {
    alert("Please enter the correct sum of 2+1.");
    return false;
  }
  
//Store Variables: 
  
  //Name
  var personVar = "";
  var personVar = (thisform.person.value);
  document.contact_form.personhid.value = personVar;
  
  //Email
  var emailVar = "";
  var emailVar = (thisform.email.value);
  document.contact_form.emailhid.value = emailVar;

  
// submit form after validating
  thisform.submit(); 
  
  }