用JavaScript封装下FileSystemObject，做下文件操作！

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var File = {
    name:'',
    path:'',
    ext:'',
    cfiles:[],
    attributes:{
        driver:'',
        parentFolder:'',
        shortName:'',
        shortPath:'',
        type:''
    },
    getInstance:function(){
      var reObj = {};
      this.path = arguments[0];
      this.name = arguments[1];
      Object.extend(reObj, this);
      //初始化FSO对象
      try{
          this.fso = new ActiveXObject("Scripting.FileSystemObject");
          if(!(fso.FolderExists(this.path))){
              fso.CreateFolder(this.path);
          };
      }catch(e){
          alert(e.message);
          return;
      };
      //如果是文件夹，获得该文件夹下所有文件
      if("" == this.name){
          this.attributes.type = 'FOLDER';
          var folder = fso.GetFolder(this.path);
          this.cfiles = new Enumerator(folder.Files);
      }else{