#left, #right {width: 200px;}
#left {float: left;}
#right {float: right;}

#header_wrapper, #content_wrapper {width: 960px; margin: 0 auto;}

/* two column */
.two #main {width: 470px; float: left;}
.two #right {width: 470px;}

/* two column left */
.two_left #main {width: 740px; float: left;}

/* two column right */
.two_right #main {width: 740px; float: right;}

/* three column */
.three #main {width: 520px; float: left; margin-left: 20px;}

/* three column right */
.three_right #right {float: left; margin-left: 20px;}
.three_right #main {width: 520px; float: right;}

/* three column left */
.three_left #main {width: 520px; float: left; margin-right: 20px;}

/* three column splash */
.splash #left, .splash #right, .splash #main {width: 306px;}
.splash #main {float: left;}
.splash #left {margin-right: 20px;}


#header_wrapper, #content_wrapper, #footer_wrapper, #middle_wrapper {clear: both; zoom: 1; overflow: hidden;}
#footer_wrapper {margin-top: 20px;}

#copyright, #powered_by {padding: 5px 10px; text-align: center;}