function browsefolder(path) {
    try {
        var message = "\u8bf7\u9009\u62e9\u6587\u4ef6\u5939";  //选择框提示信息
        var shell = new ActiveXObject("Shell.Application");
    
        var folder = shell.BrowseForfolder(0, message, 64, 17);//起始目录为：我的电脑
      //var folder = Shell.BrowseForfolder(0,Message,0); //起始目录为：桌面
        if (folder != null) {
            folder = folder.items();  // 返回 folderItems 对象
            folder = folder.item();  // 返回 folderitem 对象
            folder = folder.Path;   // 返回路径
            if (folder.charAt(folder.length - 1) != "\\") {
                folder = folder + "\\";
            }
            Ext.getCmp(path).setValue(folder);
            return folder;
        }
    }
    catch (e) {
        alert(e.message);
    }
}