function formValidate() {
   
 
   if (document.form1.Firstname.value == "") {
    alert("Please enter your first name.");
    document.form1.Firstname.focus();
    return false;
  }
   if (document.form1.Lastname.value == "") {
    alert("Please enter your last name.");
    document.form1.Lastname.focus();
    return false;
  }
   if (document.form1.email.value == "") {
    alert("Please enter your email address.");
    document.form1.email.focus();
    return false;
  }

return true;
}