Miscellany

<body>
     <div id="leftbg">
     </div>

     <div id="content">
     </div>

     <div id="rightbg">
     </div>
</body>

@media screen
{
     body
     {
          position: relative;
          text-align: center;
     }     

     div#leftbg
     {
          background-image: url(blah.gif);
          background-position: top left;
          background-repeat: no-repeat;
          z-index: 1;
          width: 50%;
          position: absolute;
          top: 0px;
          left: 0px;
     }

     div#rightbg
     {
          background-image: url(blah.gif);
          background-position: top right;
          background-repeat: no-repeat;
          z-index: 1;
          width: 50%;
          position: absolute;
          top: 0px;
          right: 0px;
     }

     div#content
     {
          position: relative;
          margin: 0px auto;
          width: 750px;
          z-index: 2;
     }
}