background-attachment 网页背景固定

右上固定：

<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>