简单JS代码压缩器

                               }
                           } else {
                               return false;
                           }
                       }
       this.remove        = function(key){delete this._hash[key];}
       this.count        = function(){var i=0;for(var k in this._hash){i++;} return i;}
       this.items        = function(key){return this._hash[key];}
       this.contains    = function(key){return typeof(this._hash[key])!="undefined";}
       this.clear        = function(){for(var k in this._hash){delete this._hash[k];}}

   }

   this._caseSensitive = true;

   //字符串转换为哈希表
   this.str2hashtable = function(key,cs){

       var _key    = key.split(/,/g);
       var _hash    = new Hashtable(); 
       var _cs        = true;

   
       if(typeof(cs)=="undefined"||cs==null){
           _cs = this._caseSensitive;
       } else {
           _cs = cs;
       }

       for(var i in _key){
           if(_cs){
               _hash.add(_key[i]);
           } else {