body {min-width:640px}
#header,#menu,#content,#sub-section,#footer {
overflow:hidden;
display:inline-block
}
/* safari and opera need this */
#header {width:100%}
#menu,#content {float:left}
#sub-section,#footer {float:right}
#menu {width:20%}
#content {width:64.9%}
#sub-section {width:15%}
#footer {width:20%;clear:right}