How to click link in IE with no href,onclick? : here's the web site: [enter link description here][1]

step 1:
    <li class="at2" data="0">业绩预告<i></i></li>
    <li data="1" class="">业绩预增<i></i></li>
    <li data="2" class="">业绩预减<i></i></li>
    <li data="3" id="fpygTab" class="">分配预告<i></i></li>

step 2:
    <span class="clickspan">业绩变动幅度</span>

i want to click "data=1" and then click "clickspan" to let data descending ,how can i do ? i have try execScript and getElementsByClassName("").click(),but it not work.


  [1]: http://data.eastmoney.com/bbsj/201603/yjyg.html
