用css滤镜,代码我忘了,其中的效果不只是你说的,有十几种呢!!

解决方案 »

  1.   

    http://www.gogogo.cn.gs/picture/picture7.htm
      

  2.   

    http://msdn.microsoft.com/archive/default.asp?url=/archive/en-us/samples/internet/ie55/DXTiDemo/dxtidemo.htm
      

  3.   

    <body onload="baobao()">
    <img src="http://www.csdn.net/images/homeimage/csdn.gif" style="filter:alpha(opacity=10);" id=myimg>
    <script>
    function baobao()
    {
    timer=window.setInterval("fade()",10)
    }
    function fade()
    {
       opacty=myimg.filters.alpha.opacity;
       if(opacty>0)myimg.filters.alpha.opacity+=10;
       else{clearInterval(timer);myimg.style.display="none";}
    }
    </script>