bootbox上的浮层弹出如何加上datepicker

<script type="text/javascript">

function bindDatePicker() {
    $("#datepicker").datepicker({
        showOtherMonths: true,
    });
}

function createLong(event){
    event.preventDefault();
    var pid = $("#cur_pid").val();
    bootbox.dialog({
        message: '<style>.datepicker{z-index: 99999 !important}<\/style>\
                <form class="form-horizontal" role="form" id="create_report_form">\
                    <input type="hidden" name="pid" value="'+ pid +'" />\
                    <div class="form-group">\
                        <label class="col-sm-3 control-label no-padding-right" for="form_title"> 标题 </label>\
                        <div class="col-sm-9">\
                            <textarea class="form-control" name="title" placeholder="标题"></textarea>\
                        </div>\
                    </div>\
                    <div class="form-group">\
                        <label class="col-sm-3 control-label no-padding-right">\
                        内容 </label>\
                        <div class="col-sm-9">\
                            <textarea class="form-control" name="content" placeholder="内容"></textarea>\
                        </div>\
                    </div>\
                    <div class="form-group">\
                        <label class="col-sm-3 control-label no-padding-right">\
                        目标 </label>\
                        <div class="col-sm-9">\
                            <textarea class="form-control" name="target" placeholder="目标"></textarea>\
                        </div>\
                    </div>\
                    <div class="form-group">\
                        <label class="col-sm-3 control-label no-padding-right">\
                        截止时间 </label>\
                        <div class="col-xs-6">\
                            <div class="input-group input-group-sm">\
                                <input type="text" id="datepicker" class="form-control hasDatepicker">\
                                <span class="input-group-addon">\
                                    <i class="icon-calendar"></i>\
                                </span>\
                            </div>\
                        </div>\
                    </div>\
                    \<script type="text/javascript">bindDatePicker()\<\/script>\
                  </form>',
        title: "创建长期计划",
        buttons:             
        {
            "success" :
             {
                "label" : "<i class='icon-ok'></i> 提交",
                "className" : "btn-sm btn-success",
                "callback": function() {
                    var params = $("#create_report_form").serialize();
                    $.ajax({
                        type: "post",
                        dataType: "jsonp",
                        url: "http://api.test/report/create",
                        data: params,
                        jsonp: 'callback',
                        jsonpCallback: 'callbackReportCreate',
                        success: function(data) {
                            if (data.msg == 'ok') {
                                var reports = data.data;
                                location.reload();
                            }
                        }
                    });
                }
            }
        }
    });
}