var TJSDICT = function(dict){
  this.init(dict);
}

TJSDICT.prototype = {
  dict : {},
  init : function($dict){
    this.dict = $dict;
  },

  get : function($key,$defa){
    var $keys = $key.split(".");
    if($defa == undefined) $defa = "";
    var pointer = this.dict;
    for(var $ix in $keys){
      var $key = $keys[$ix];
      if(pointer[$key] == undefined) return $defa;
      pointer = pointer[$key];
    }
    return pointer;
  }
}