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<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="zh-CN" lang="zh-CN"> <head> <meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> <meta http-equiv="Content-Language" content="zh-cn" /> <title>why?</title> <meta name="robots" content="index, follow" /> http://www.w3css.com/allnews.asp?id=990 <meta name="googlebot" content="index, follow" /> <style type="text/css" media="screen"> <!-- * {margin:0;padding:0;} body {margin:0 auto;font:12px/20px tahoma Simsun Arial;color:#fff;background-color:#FFF;text-align:center;} .aaa{ width:150px; background:Blue;position:absolute;left:0;top:0; } .bbb{ width:150px; background:Blue;position:absolute;right:0;top:0; } .ccc{ width:150px; position:absolute; top:100%;left:0; margin-top:-20px; background:Blue;} .ddd{ width:150px; position:absolute; top:100%;right:0; margin-top:-20px; background:Blue;} .aa{ width:50px; position:fixed; background:Black; _position:absolute;_top:expression(eval(document.documentElement.scrollTop));z-index:1000;left:0;top:0; } .bb{ width:50px; position:fixed; background:Black; _position:absolute;_top:expression(eval(document.documentElement.scrollTop));z-index:1000;right:0;top:0; } .a{ color:#000; } --> </style> </head> <body> <div class="aaa">AAA</div> <div class="bbb">BBB</div> <div class="aa">A</div> <div class="bb">B</div> <div class="a"> <br /><br /><br /><br /> <br /> A层和B层会随滚动条移动永久置顶 <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /> <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /> <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /> <br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /><br /> </div> <div class="ccc">CCC</div> <div class="ddd">DDD</div> </body> </html> |