http://www.saila.com/usage/layouts/
http://glish.com/css/
http://www.spinwebdesign.com/experiments/dynamicHeight.shtml
http://www.alistapart.com/stories/flexiblelayouts/
http://www.bluerobot.com/web/layouts/
http://www.thenoodleincident.com/tutorials/box_lesson/boxes.html