模拟旋转
<!DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"><html><head> <title> tt </title> <style type="text/css"> body{background:black} #p1{position:absolute;height:75px;top:200px;} </style> <script type="text/javascript"> var left=200; var img=document.getElementById('p1'); var imgWidth=286; var pi=Math.PI; var x=0,temp=0; function init(){ document.getElementById('p1').style.left=left+'px'; var set=setInterval('goOn()',40); } function goOn(){ temp=Math.cos(x); document.getElementById('p1').style.width=Math.abs(imgWidth*temp)+'px'; document.getElementById('p1').style.left=(left+(imgWidth-Math.abs(imgWidth*temp/2)))+'px'; if(temp<0){ document.getElementById('p1').style.filter='FlipH(enabled:true)'; }else{ document.getElementById('p1').style.filter='FlipH(enabled:false)'; } x+=pi/90; } </script></head><body ><div id="imground"> <img id="p1" src="http://www.google.cn/intl/zh-CN/images/logo_cn.gif" alt=""/></div><script type="text/javascript">init();</script></body></html>
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