CSS fixed toolbar at the top of the web page can be dragged without flickering code_Typical special effects

In fact, careful friends will find that the top toolbar is actually a tiled background image, and CSS plays the role of fixed background, which is also a unique implementation method.

<meta http-equiv="Content-Type" content="text/html; charset=gb2312"> <title>Top drag flicker-free menu bar</title> <style type="text/css"> * { margin: 0px; padding: 0px; } body { background-image: url(); background-attachment: fixed; } #topNavWrapper { width: 980px; text-align: left; height: 31px; margin: 0px auto; z-index:100; _position: relative ; _top:0px; } #topNav { width: 980px; float: left; display: block; z-index: 100; overflow: visible; position: fixed; top: 0px; /* position fixed for IE6 */ _position: absolute; _top: expression(documentElement.scrollTop "px"); background-image: url(/upload/2010-3/20100303232637297.gif); background-repeat: no-repeat; background-position: right; height: 31px; } </style> <div id="topNavWrapper"> <ul class="jd_menu" id="topNav"> <li><a href="http://www.jb51.net" target="_blank">Script House</a></li> </ul> </div> <table><tr><td height="1080"></td></tr></table>