(function ($) {
// VERTICALLY ALIGN FUNCTION
$.fn.vAlign = function() {
    return this.each(function(i){
    var ah = $(this).height();
    var ph = $(this).parent().height();
    var mh = (ph - ah) / 2;
    if (mh < 0) mh = 0;
    $(this).css({'margin-top': mh + 'px'});
    });
};
})(jQuery);