<style type="text/css">
<!--
body{
background-image:url("背景url");
background-position:100% 0%;
background-repeat:no-repeat;
background-attachment:fixed;}
-->
</style>
------------------------右下固定：
<!--
body {
background-image:url("5.jpg");
background-position:100% 100%;
background-repeat:repeat-y;
background-repeat:no-repeat;
background-attachment:right bottom;
}
-->
------------------------左上
<style type="text/css">
<!--
body{
background-image:url("背景url");
background-repeat:no-repeat;
background-attachment:fixed;}
-->
</style>
------------------------左下
<style type="text/css">
<!--
body{
background-image:url("背景url");
background-position:0% 100%;
background-repeat:no-repeat;
background-attachment:fixed;}
-->
</style>
-------------------------正中
<style type="text/css">
<!--
body{
background-image:url("背景url");
background-repeat:no-repeat;
background-attachment:fixed;
background-position:center ;}
-->
</style>
-----------------------右边
<style type="text/css">
<!--
body{
background-image:url("背景url");
background-position:100% 0%;
background-repeat:repeat-y;
background-attachment:fixed;}
-->
</style>
------------------左边
<style type="text/css">
<!--
body{
background-image:url("背景url");
background-repeat:repeat-y;
background-attachment:fixed;}
-->
</style>
--------------上边
<style type="text/css">
<!--
body{
background-image:url("背景url");
background-repeat:repeat-x;
background-attachment:fixed;}
-->
</style>
-----------------------下边
<style type="text/css">
<!--
body{
background-image:url("背景url");
background-position:bottom;
background-repeat:repeat-x;
background-attachment:fixed;}
-->
</style>