function f_validate(){
if (!empty_check(window.document.fm1.first_name, "First Name")) {
   event.returnvalue = false;
   return false;
}
if (!empty_check(window.document.fm1.email, "eMail")) {
   event.returnvalue = false;
   return false;
}
if (!empty_check(window.document.fm1.phone, "phone")) {
   event.returnvalue = false;
   return false;
}
if (!empty_check(window.document.fm1.arrival_date, "Arrival Date")) {
   event.returnvalue = false;
   return false;
}
if (!empty_check(window.document.fm1.departure_date, "Departure Date")) {
   event.returnvalue = false;
   return false;
}else{
 return true; 		
} 
}