document.getElementById('nextId').innerHTML='<p>下一篇：<a href=/news/lrjk/20090310045546.html>游泳促进老人身心健康</a></p><p>上一篇：<a href=/news/lrjk/20090316101847.html>常喝莲子汤宜治老人尿频病</a></p>'