body {min-width:640px}
 #header,#menu,#content,#sub-section,#footer {
 overflow:hidden;
 display:inline-block
 }
 /* safari and opera need this */
 #header,#menu,#footer {width:100%}
 /* safari and opera need this */
 #menu {margin-top:-3px}
 #content,#sub-section {float:left}
 #content {width:80%}
 #sub-section {width:19.9%}
 #footer {clear:left}