<head> <script type="text/javascript"> window.onload = function () { var nav = document.getElementById('nav'); var navFixed = document.getElementById('navFixed'); window.onscroll = function () { var scrollTop = document.documentElement.scrollTop || document.body.scrollTop; document.title = scrollTop if (scrollTop > nav.offsetTop) { navFixed.style.display = 'block'; } else if (scrollTop < nav.offsetTop) { navFixed.style.display = 'none'; } } }; </script> <style type="text/css"> .nav-wrapper{margin:5px auto;width: 960px;} .nav-wrapper-fixed{ position:fixed; top:0; width:100%;margin:5px auto;width: 960px;z-index:999;} </style> </head> <body> <div class="nav-wrapper"> <a href=/pages/cyyw/2013/1204/402.html><img src="/uploads/allimg/131204/2_1141363141.png"></a> </div> <div class="cen"> <div class="nav-wrapper-fixed" id="navFixed" style="display:none;"> <a href=/pages/cyyw/2013/1204/402.html><img src="/uploads/allimg/131204/2_1141363141.png"></a> </div> </div> </body>
|
|