$(document).ready(function(){
                $.fn.vAlign = function(){
                    return this.each(function(i){
                        var ah = $(this).height();
                        var ph = $('.thumbnail').height();
                        var uh = $('.thumbnail ul').height();
                        var mh = (ph - ah - uh) / 2;
                        $(this).css('padding-top', mh);
                    });
                };
                $('.thumbnail img').vAlign();
                
            });