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<!DOCTYPE HTML> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8"> <title>飘窗代码</title> </head> <body> <div id="FlAD" style="position:absolute; z-index:10;left: 100; top: 100" > <span style="color:red; float:right; font-size:12px; cursor:pointer;" onClick="img.style.visibility = ‘hidden‘">关闭</span><br /> <a href="#" target="_blank" title="文字"> <img src="http://210.75.213.166/Portals/0/2010images/2011lh.gif" width="160" border="0" alt="" /></a></div> <script type="text/javascript"> <!--Begin var img = document.getElementById(‘FlAD‘); var xPos = 200; var yPos = 200; var step = 1; var delay = 40; var height = 0; var Hoffset = 0; var Woffset = 0; var yon = 0; var xon = 0; var pause = true; var interval; img.style.top = yPos; function changePos() { width = document.documentElement.clientWidth || document.body.clientWidth; height = document.documentElement.clientHeight || document.body.clientHeight; scrollLeft = document.documentElement.scrollLeft || document.body.scrollLeft; scrollTop = document.documentElement.scrollLeft || document.body.scrollTop; Hoffset = img.offsetHeight; Woffset = img.offsetWidth; img.style.left = xPos + scrollLeft +‘px‘; img.style.top = yPos + scrollTop +‘px‘; if (yon) { yPos = yPos + step; } else { yPos = yPos - step; } if (yPos < 0) { yon = 1; yPos = 0; } if (yPos >= (height - Hoffset)) { yon = 0; yPos = (height - Hoffset); } if (xon) { xPos = xPos + step; } else { xPos = xPos - step; } if (xPos < 0) { xon = 1; xPos = 0; } if (xPos >= (width - Woffset)) { xon = 0; xPos = (width - Woffset); } } function start() { img.visibility = "visible"; interval = setInterval(‘changePos()‘, delay); } start(); </script> </body> </html>
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原文地址：http://www.cnblogs.com/yjhua/p/4623548.html
