}}?output=epub" class="btn btn-default btn-filedown btn-block"> <i class="fa fa-cloud-download"></i> EPUB<span class="hidden-xs">文档</span></a>
                                <a href="{{urlfor "DocumentController.Export" ":key" $.Book.Identify}}?output=mobi" class="btn btn-default btn-filedown btn-block"> <i class="fa fa-cloud-download"></i> MOBI<span class="hidden-xs">文档</span></a>
                            </div>
                        </div>
                        {{else}}
                   