#page_bg{margin:0;padding:0;margin-bottom:1px;}
div#wrapper_left{margin-left:0;margin-right:auto;}
div#wrapper_center{margin-left:auto;margin-right:auto;margin-bottom:20px;}
div#wrapper_right{margin-left:auto;margin-right:0;}
body.width_medium div#wrapper_right ,body.width_medium div#wrapper_left ,body.width_medium div#wrapper_center{width:950px;}
body.width_small div#wrapper_right ,body.width_small div#wrapper_left ,body.width_small div#wrapper_center{width:750px;}
body.width_fluid div#wrapper_right ,body.width_fluid div#wrapper_left ,body.width_fluid div#wrapper_center{width:1000px;}