BootStrap - FileUpload美化样式

<div class="panel panel-default" style="border: 1px solid #ffd800;">
                <div class="panel-heading" style="background-color: #ffd800; color: #ffffff;">
                    <h5><b>请，选择上传文件：</b></h5>
                </div>
                <div class="panel-body">
                    <table>
                        <tr>
                            <td>
                                <label for="exampleInputFile">选择上传文件：</label>
                            </td>
                            <td>
                                <input id="lefile" type="file" style="display: none;"/>
                                <div class="input-append">
                                    <input id="photoCover" class="input-large" type="text" style="height: 30px; border-radius:5px; border:1px solid #CCCCCC; padding-left:10px;" placeholder="FileUpload" />
                                    <a class="btn" onclick="$(‘input[id=lefile]‘).click();" style ="background-color:#FFD800; height:30px; color:#ffffff; width:100px;">上传</a>
                                </div>

                                <script type="text/javascript">
                                    $(‘input[id=lefile]‘).change(function () {
                                        $(‘#photoCover‘).val($(this).val());
                                    });
</script>
                            </td>
                        </tr>
                        <tr>
                            <td>
                                <label for="exampleInputEmail1">打印份数：</label>
                            </td>
                            <td>
                                <input type="email" class="form-control" id="pagenum" placeholder="PageNum" style="width: 100px;" />
                            </td>
                        </tr>
                    </table>
                </div>
            </div>