jQuery 100% height

 jQuery(document).ready(function () {
            setDIVHeight();
        });

   jQuery(window).resize(function () {
            setDIVHeight();
   });

	function setDIVHeight() {
            var theDiv = jQuery('.full_width_area');
            var divTop = theDiv.offset().top;
            var winHeight = jQuery(window).height();
            var divHeight = winHeight - divTop;
            theDiv.height(divHeight);

        }