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<html> <head><title>对联广告</title> <style> body{ height:2000px; } .dui{ width:100px; height:400px; border:1px solid red; } #left{ float:left; overflow:hidden; position:relative; background:url('left_ad.jpg') } #right{ float:right; position:relative; background:url('right_ad.jpg') } .fix{ position:fixed; top:150px; } </style> </head> <body> <script src='jquery-1.4.2.min.js'></script> <script> jQuery(document).ready(function(jquery){ jquery(window).scroll(function (){ var to=jquery('.fix').offset().top; jquery('.dui').animate({ top:to+'px' },'200'); }); }); </script> <div id='left' class='dui'> <div class='fix'></div> </div> <div id='right' class='dui'></div> </body> </html> |
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