body {margin: 0; padding: 0; background-image: url('bg.jpg'); background-repeat: no-repeat; background-position: center center; background-attachment: fixed; }
#imSite {width: 1000px; margin: 15px auto; text-align: left; }
#imHeader {height: 90px; background-image: url('top.jpg'); background-repeat: no-repeat; }
#imBody {}
#imMenuMain {width: 165px; float: left; padding: 16px 0 0 40px; }
#imContent {width: 788px; float: left; margin-top: 6px; }
#imFooter {clear: both; height: 1px; }