Registering with Javascript

Here is the process going on. I have a form. I want to make the registration process after I make the required check of this form. I tried many methods but I could not... ......

  function KontrolForm(){
      if(document.formInsert.search_new_places.value == ""){
          window.alert("Alanı Boş Bırakmayın");
          return false;
      }else {
        $('#btn_save').click(function(){
            var place   = $.trim($('#n_place').val());
            var description = $.trim($('#n_description').val());
            var kayitliyer = $.trim($('#search_new_places').val());
            var yetkiliad = $.trim($('#n_yetkiliad').val());
            var magazaad = $.trim($('#n_magazaad').val());
            var telefon = $.trim($('#n_telefon').val());
            var yetkilitelefon = $.trim($('#y_telefon').val());
            var derece = $.trim($('#derece').val());
            var country = $.trim($('#country').val());
            var lat = $.trim($('#lat').val());
            var long = $.trim($('#long').val());
           // var lat = homeMarker.getPosition().lat();
            //var lng = homeMarker.getPosition().lng();


            $.post('save_place.php', {'place' : place, 'description' : description, 'lat' : lat, 'long' : long, 'kayitliyer' : kayitliyer, 'yetkiliad' : yetkiliad, 'magazaad' : magazaad, 'telefon' : telefon,'yetkilitelefon' : yetkilitelefon, 'derece' : derece, 'country': country},
                function(data){
                    var place_id = data;
                    var new_option = $('<option>').attr({'data-id' : place_id, 'data-place' : place, 'data-lat' : lat, 'data-lng' : long, 'data-description' : description, 'data-kayitliyer' : kayitliyer, 'data-yetkiliad' : yetkiliad, 'data-magazaad' : magazaad, 'data-telefon' : telefon,'data-yetkilitelefon': yetkilitelefon,'data-derece' : derece, 'data-country' : country}).text(place);
                    new_option.appendTo($('#saved_places'));
                }
            );

            $('input[type=text], input[type=hidden]').val('');


        });
      }
      return true;
    }

<div class="form-group">
<input type="submit" onsubmit="return KontrolForm()" class="btn btn-success btn-block" id="btn_save" value="Kaydet" />
</div>