A jQuery plug-in to make elements the same height (by max height or min height)

jquery.sameheight.js

/**
 * Same Height, jQuery plug-in.
 *
 * This plug-in allows you to automatically have all of the elements marked
 * with a particular class to be the same height, either by smallest or
 * largest.
 * 
 * By default, 'samemaxheight' and 'sameminheight' will be used.
 *
 * Examples of use:
 *
 *     $(function() {
 *         $('body').sameheight();
 *     });
 *
 *     $(function() {
 *         $('#mainContent').sameheight({
 *             max: 'mymaxclass',
 *             min: 'myminclass'
 *         });
 *     });
 *     
 *     $.fn.sameheight.defaults.max = 'mymaxclass';
 *     $.fn.sameheight.defaults.min = 'myminclass';
 *     $('body').sameheight();
 *
 * @copyright Copyright (c) 2013 Andrew Collington <andy@amnuts.com>
 */
(function($) {
    $.fn.sameheight = function(userOptions) {
        var options = $.extend({}, $.fn.sameheight.defaults, userOptions);
        if ($('.' + options.max).length) {
            var maxH = 0;
            $('.' + options.max).each(function(){
                var to = $(this).css('overflow');
                var th = $(this).css('height');
                $(this).css({'overflow':'auto','height':'auto'});
                if ((($(this).innerHeight() > maxH) || !maxH)) {
                    maxH = $(this).innerHeight();
                }
            });
            $('.' + options.max).each(function(){
                $(this).css({
                    'height': maxH + 'px',
                    'overflow':'auto'
                });
            });
        }
        if ($('.' + options.min).length) {
            var minH = 0;
            $('.' + options.min).each(function(){
                var to = $(this).css('overflow');
                var th = $(this).css('height');
                $(this).css({'overflow':'auto','height':'auto'});
                if ((($(this).innerHeight() < minH) || !minH)) {
                    minH = $(this).innerHeight();
                }
            });
            $('.' + options.min).each(function(){
                $(this).css({
                    'height': minH + 'px',
                    'overflow':'auto'
                });
            });
        }
    };
 
    $.fn.sameheight.defaults = {
        max: 'samemaxheight',
        min: 'sameminheight'
    };
})(jQuery);