bootstrap模态框

<a?href="javascript:void(0);"?class="btn?btn-info?add-expert"?data-backdrop="static"?data-toggle="modal"?data-target="#mymodal">按钮</a>
<div?class="modal?fade"?id="mymodal"?role="dialog"?aria-labelledby="myModalLabel"?aria-hidden="true">
????<div?class="modal-dialog">
????????<div?class="modal-content">
????????????<div?class="modal-header">
????????????????<button?type="button"?class="close"?data-dismiss="modal"?aria-hidden="true">&times;</button>
????????????????<h4?class="modal-title"?id="myModalLabel">标题</h4>
????????????</div>
????????????<div?class="modal-body">
????????????????文本
????????????</div>
????????????<div?class="modal-footer">
????????????????<button?type="button"?class="btn?btn-default"?data-dismiss="modal">关闭</button>
????????????????<button?type="button"?class="btn?btn-primary">提交更改</button>
????????????</div>
????????</div>
????</div>
</div>