function initSlider(url, id){
  $(document).ready(function() {
  var _data = [];
  var _json = [];
  var _url =  url;
  var _id =  id;

  $.ajax({
    url: _url,
    dataType: "json",
    success: function(data) {
      onJSONComplete(data);
    }
  });


  function onJSONComplete(data){
      var success = parseTree(data.images, _id, _data);
      if(success) {
        if(_data.length) {
          createSlider();
        }
      }
   }


  function parseTree(object, id, target){
    var success = false;
    var i;

    if(object.id.toLowerCase() == id){
      for (i in object.aI){
        target.push(object.aI[i]);
      }
      success = true;
    }

    else {
      for(i in object.aF){
        success = parseTree(object.aF[i], id, target);
        if(success){
          break;
        }
      }

      if (!success) {
        for (i in object.aI){
          if(object.aI[i].id.toLowerCase() == id){
            target.push(object.aI[i]);
            success = true;
            break;
          }
        }
      }
    }
    return success;
  }


  function createSlider(){
    for(var i=0; i<_data.length; i++){
        _json.push({image:_data[i].url});
    }

   Galleria.loadTheme('galleria.classic.js');
   $('#galleria_content').galleria({
    data_source: _json
   });
  }
})
};