$(function() {
        photolist_change();
            initphotoswipefromdom('.photolist_i1','li');
        });
        function photolist_change(){
            $('.photolist_i1').find('a').each(function(){
            var that = this;
            var image = new image();
            image.src = $(this).attr("href");
            var set=setinterval(function(){
                if(image.width>0 || image.height>0){
                var size = image.width + 'x' + image.height;
                $(that).attr('data-size',size);
                clearinterval(set);
            }
        },40);
        });
    }