function checkform(form) {
  if (form.email.value == "") {
    alert( "Please enter the Email Address." );
    form.email.focus();
    return false ;
  }  
  if (/^\w+([\.-]?\w+)*@\w+([\.-]?\w+)*(\.\w{2,6})+$/.test(form.email.value)) {
    null;
  }
  else {
	alert( "Please enter a valid Email Address." );
    form.email.focus();
    return false ;
  }
  if (form.first_name.value == "") {
    alert( "Please enter the First Name." );
    form.first_name.focus();
    return false ;
  }
  if (form.last_name.value == "") {
    alert( "Please enter the Last Name." );
    form.last_name.focus();
    return false ;
  }
  if (!form.optin.checked) {
    alert( "You must check the optin box to continue." );
	form.optin.focus();
	return false;
  }
  return true;
}