#head {background:url(../images/head_image.jpg);}

#contentwrapper {position: absolute; left: 50%; top: 50%; margin-left: -266px; margin-top: -34px; width: 766px; height: 384px; background:url(../images/bottom_image.jpg);}
#content {width: 425px; height: 300px; overflow: auto; margin-left: 30px;}