div#wrapper{float:left;width:100%}
div#content{margin: 0 200px 0 0}
div#rightside{float:left;width:200px;margin-left:-200px;padding: 10px 0}
div#leftside{float:left;width:200px;margin-left:-100%;padding: 10px 0;display:none}
div#footer{clear:left;width:100%}