// JavaScript Document
function chkReg(){
 if (document.registration.firstname.value == "") {
  alert("Please fill in your first name.")
  document.registration.firstname.focus();
  return false}
 if (document.registration.lastname.value == "") {
  alert("Please fill in your last name.")
  document.registration.lastname.focus();
  return false}
  if (document.registration.email.value == "") {
  alert("Please fill in your email address.")
  document.registration.email.focus()
  return false}
 if (document.registration.email.value.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/)) {
  alert("Please enter a valid email address.")
  document.registration.email.focus()
  return false}
 if (document.registration.address.value == "") {
  alert("Please fill in your mailing address.")
  document.registration.address.focus()
  return false}
 if (document.registration.city.value == "") {
  alert("Please fill in your city.")
  document.registration.city.focus()
  return false}
 if (document.registration.state.value == "") {
  alert("Please select your state.")
  document.registration.state.focus()
  return false}
 if (document.registration.zip.value == "") {
  alert("Please fill in your zip code.")
  document.registration.zip.focus()
  return false}
 if (document.registration.country.value == "") {
  alert("Please select your country.")
  document.registration.country.focus()
  return false}
 if (document.registration.product.value == "") {
  alert("Please select your product.")
  document.registration.product.focus()
  return false}
 if (document.registration.purchaseDate.value == "") {
  alert("Please enter your product purchase date.")
  document.registration.purchaseDate.focus()
  return false}
 if (document.registration.regNo.value == "") {
  alert("Please enter your product registration No.")
  document.registration.regNo.focus()
  return false}
 if (document.registration.serNo.value == "") {
  alert("Please enter the calculator serial No.")
  document.registration.serNo.focus()
  return false;
  
 }
 else { document.registration.submit(); }
}

function chkContact(){
 if (document.contactus.firstname.value == "") {
  alert("Please fill in your first name.")
  document.contactus.firstname.focus();
  return false}
 if (document.contactus.lastname.value == "") {
  alert("Please fill in your last name.")
  document.contactus.lastname.focus();
  return false}
 if (document.contactus.address.value == "") {
  alert("Please fill in your mailing address.")
  document.contactus.address.focus()
  return false}
 if (document.contactus.city.value == "") {
  alert("Please fill in your city.")
  document.contactus.city.focus()
  return false}
 if (document.contactus.state.value == "") {
  alert("Please select your state.")
  document.contactus.state.focus()
  return false}
 if (document.contactus.zip.value == "") {
  alert("Please fill in your zip code.")
  document.contactus.zip.focus()
  return false}
 if (document.contactus.country.value == "") {
  alert("Please select your country.")
  document.contactus.country.focus()
  return false}
 if (document.contactus.email.value == "") {
  alert("Please fill in your email address.")
  document.contactus.email.focus()
  return false}
 if (document.contactus.email.value.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/)) {
  alert("Please enter a valid email address.")
  document.contactus.email.focus()
  return false;
  
 }
 else { document.contactus.submit(); }
}