function CheckInfo() {
  
  if (document.frmRegister.FirstName.value=="") {
    alert("Please enter First Name");
    document.frmRegister.FirstName.focus();
    return false;
  }
  if (document.frmRegister.LastName.value=="") {
    alert("Please enter Last Name");
    document.frmRegister.LastName.focus();
    return false;
  }
  if (document.frmRegister.Phone.value=="") {
    alert("Please enter Phone number");
    document.frmRegister.Phone.focus();
    return false;
  }
  
  if (document.frmRegister.Email.value=="") {
    alert("Please enter e-mail address");
    document.frmRegister.Email.focus();
    return false;
  } else {
    if (isEmail(document.frmRegister.Email.value)==false) {
      alert("Please enter a valid e-mail address, like: name@companyname.com");
      document.frmRegister.Email.focus();
      return false;
    }
  }
  
  if (document.frmRegister.SN.value=="") {
    alert("Please enter Serial Number");
    document.frmRegister.SN.focus();
    return false;
  }
  
   if (document.frmRegister.chkTerms.checked==false) {
      alert("You must agree to the terms and conditions ");
      return false;
    }
  

  return true;
}