function validate() {
// Text values
  if (document.form.subscriber_name.value.length < 2) {
   alert("Please fill your name -completely-.");
   return false;
 }
   if (document.form.subscriber_surname.value.length < 2) {
   alert("Please fill your surname -completely-.");
   return false;
 } 
   if (document.form.subscriber_address.value.length < 2) {
   alert("Please fill your address -completely-.");
   return false;
 }
   if (document.form.subscriber_phone.value.length < 2) {
   alert("Please fill your phone -completely-.");
   return false;
 }  
   if (document.form.subscriber_city.value.length < 2) {
   alert("Please fill your city -completely-.");
   return false;
 }  
   if (document.form.subscriber_country.value.length < 2) {
   alert("Please fill your country -completely-.");
   return false;
 } 
  if (document.form.subscriber_email.value.length < 5) {
   alert("Please fill your e-mail -completely-.");
   return false;
 }
 return true;
}