function checkdata()
{
     var uppervalue;

 if (document.ThisForm.guestname.value.length < 2) {
         alert ("You forgot your name !");
                  document.ThisForm.guestname.focus();
         return false;
   }
 if (document.ThisForm.country.value.length < 5) {
         alert ("Can you tell us what country you are from?");
                  document.ThisForm.country.focus();
         return false;
   }

 if (document.ThisForm.email.value.length < 9) {
         alert ("Do you have an email address?");
                  document.ThisForm.email.focus();
         return false;
   }
     return  true
}