DIV周边添加投影
.tou{

    width:1000px; height:300px; border:0px solid #999; background:#FFF; margin:0 auto; margin-bottom:20px;

    filter:progid:DXImageTransform.Microsoft.Shadow(color=#909090,direction=200 strength=1);/*ie*/

    -moz-box-shadow: 0px 0px 5px #909090;/*firefox*/

    -webkit-box-shadow: 0px 0px 5px #909090;/*safari或chrome*/

 }

body

{

　　background-image:url(101017.jpg);

　　background-repeat:no-repeat;

　　background-attachment:fixed

}