Fancybox limited image size, Ossn

fancybox.init.php

Ossn.RegisterStartupFunction(function() {
    $(document).ready(function() {
        $(".activity-item-container .description img").fancybox({
            'titleShow': false,
            top: '75px',
            afterClose: function() {
                $(".activity-item-container .description img").show();
            },
            fitToView: false,
            beforeShow: function() {
                this.width = 800;
                this.height = 800;
            },
        });
    });
});