MiniUI mini-datepicker控件日期不可选

开始日期：<input id="beginDateTime" class="mini-datepicker" value="<%=DateTime.Now.AddDays(-7).ToString("yyyy-MM-dd") %>" style="width: 100px;" ondrawdate="onDrawDate" />&nbsp;
结束日期：<input id="endDateTime" class="mini-datepicker" value="<%=DateTime.Now.ToString("yyyy-MM-dd") %>" style="width: 100px;" ondrawdate="onDrawDate" />

<script type="text/javascript">
     function onDrawDate(e) {
         var date = e.date;
         var d = new Date();

if (date.getTime() < d.getTime()) {
         e.allowSelect = true;
}
else {
        e.allowSelect = false;
}
}
</script>