div显示关闭图标

<div class="selectedctrl" id=""><div class="popbtn" onclick="removeTag(this)"></div>2010</div>

.selectedctrl {    border: 1px solid #add3e5;    display: inline-block;    height: 25px;    line-height: 25px;    margin-left: 15px;    margin-top: 5px;    margin-bottom: 5px;    padding: 0 10px;    position: relative;}.popbtn {    background: transparent url(../images/close_normal.png) no-repeat scroll 0 0;    cursor: pointer;    font-size: 0;    height: 15px;    position: absolute;    right: -7px;    top: -7px;    width: 15px;}