position:absolute实现垂直居中

<span style="position:absolute;">
                      <!--{if $aListData[data].istop}-->
                      <img src="/images/common/top_icon.png" height="22px;" class="center-vertical-1">
                      </span>
                      <!--{/if}-->
                      <!--{$aListData[data].Title}-->
                      <!--{if $aListData[data].new}-->
                      <span style="position:absolute;">
                      <img src="/images/new.png" height="22px;" class="center-vertical-2">
                      </span>
                      <!--{/if}-->

/*垂直居中*/
.center-vertical-1{
    position:absolute;
    top:50%;
    left:-27px;
    height:22px;
}

.center-vertical-2{
    position:absolute;
    top:50%;
    left:8px;
    height:22px;
}