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网页漂浮广告制作

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<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" />
<meta name="Copyright" content="漂浮广告 http://www.alixixi.com/" />
<meta name="description" content="漂浮广告" />
<meta content="漂浮广告" name="keywords" />
<title>漂浮广告</title>

</head>

<body>
<DIV id=img1 style="Z-INDEX: 100; LEFT: 2px; WIDTH: 59px; POSITION: absolute; TOP: 43px; HEIGHT: 61px;
 visibility: visible;">
 <a href="http://www.alixixi.com/" target="_blank"><img src="images/pic.gif" width="80" height="80" border="0"></a>
 </DIV>
<SCRIPT>
var xPos = 300;
var yPos = 200;
var step = 1;
var delay = 30;
var height = 0;
var Hoffset = 0;
var Woffset = 0;
var yon = 0;
var xon = 0;
var pause = true;
var interval;
img1.style.top = yPos;
function changePos()
{
 width = document.body.clientWidth;
 height = document.body.clientHeight;
 Hoffset = img1.offsetHeight;
 Woffset = img1.offsetWidth;
 img1.style.left = xPos + document.body.scrollLeft;
 img1.style.top = yPos + document.body.scrollTop;
 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()
  {
   img1.visibility = "visible";
  interval = setInterval('changePos()', delay);
 }
 function pause_resume()
 {
  if(pause)
  {
   clearInterval(interval);
   pause = false;}
  else
  {
   interval = setInterval('changePos()',delay);
   pause = true;
   }
  }
 start();
</SCRIPT>
</body>
</html>

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