$('document').ready(function() {
    $("p.aligned").vAlign();
    $("div.twitteralign").vAlign("p");
});

(function($) {
    $.fn.vAlign = function(container) {
        return this.each(function(i) {
            if (container == null) {
                container = 'div';
            }
            $(this).html("<" + container + ">" + $(this).html() + "</" + container + ">");
            var el = $(this).children(container + ":first");
            var elh = $(el).height(); //new element height
            var ph = $(this).height(); //parent height
            var nh = (ph - elh) / 2; //new height to apply
            $(el).css('margin-top', nh);
        });
    };
})(jQuery);