html, body {
 height: 100%;
 background: #c0c0c0 url(../images/bg.jpg) repeat; 
 font-family: Arial, Helvetica, sans-serif;
 text-align: center;
 font-size: 0.9em;
}

div#main {
 width: 800px;
 min-height: 100%;
 _height: 100%;
 _overflow-x: hidden;
 background: url(../images/bgsides.jpg) repeat-y;
 text-align: left;
 margin: auto;
 position: relative;
}

div#wrapper {
 width: auto;
 height: 100%;
 margin: 0 19px;
}