function Form_OnSubmit(form)
{
  if(form.name=='reservation_form')
    {
      var day = document.getElementById('reservation_day1').value;
      var month = document.getElementById('reservation_month1').value;
      var year = document.getElementById('reservation_year1').value;  
      
      document.getElementById('datein').value = day+'-'+month+'-'+year;
      
      day = document.getElementById('reservation_day2').value;
      month = document.getElementById('reservation_month2').value;
      year = document.getElementById('reservation_year2').value;    
      
      document.getElementById('dateout').value = day+'-'+month+'-'+year;   
    }
	return true;
}