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<td id="showbfq" height="20" align="center" onclick="if(bfq.style.display==‘none‘){bfq.style.display=‘‘;showbfq.innerText=‘优质‘;}else{bfq.style.display=‘none‘;showbfq.innerText=‘点击更多‘;}">点击更多</td>
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<td height="80" align="center" id="bfq" style="display:none;">aaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaaa</td>
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</html>原文：http://wzsts.blog.51cto.com/10251779/1782783