.r1
{...}
{width:80px;height:80px;background:red;float:right; 
position:fixed !important; top/**//**/:200px;
position:absolute; z-index:300; top:expression(offsetParent.scrollTop+200);right:20px;}

.r2
{...}
{width:80px;height:80px;background:red;float:right; 
position:fixed !important; top/**//**/:300px;
position:absolute; z-index:400; top:expression(offsetParent.scrollTop+300);right:20px;}

.l1
{...}
{width:80px;height:80px;background:red;float:right; 
position:fixed !important; top/**//**/:200px;
position:absolute; z-index:300; top:expression(offsetParent.scrollTop+200);left:20px;}

.l2
{...}
{width:80px;height:80px;background:red;float:right; 
position:fixed !important; top/**//**/:300px;
position:absolute; z-index:400; top:expression(offsetParent.scrollTop+300);left:20px;}
<
div
class
="r1"
><
a
href
="http://www.jb51.net"
target
='_about'
><
img
src
="/js/pic/piao-l-1.gif"
width
="80"
height
="80"
border
="0"
/></
a
></
div
>
<
div
class
="r2"
><
a
href
="http://www.jb51.net"
target
='_about'
><
img
src
="/js/pic/piao-l-1.gif"
width
="80"
height
="80"
border
="0"
/></
a
></
div
>
<
div
class
="l1"
><
a
href
="http://www.jb51.net"
target
='_about'
><
img
src
="/js/pic/piao-l-1.gif"
width
="80"
height
="80"
border
="0"
/></
a
></
div
>
<
div
class
="l2"
><
a
href
="http://www.jb51.net"
target
='_about'
><
img
src
="/js/pic/piao-l-1.gif"
width
="80"
height
="80"
border
="0"
/></
a
></
div
>

本文来自: 脚本之家( www.jb51.net) 详细出处参考: http://www.jb51.net/article/13235.htm
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