I have updated the plugin so that it works with multiple vertical slider...

...s per page.

To also make it work you would need to include the following:

$('.slider').each(function() {
        $(this).mb_vSlider({ 
            easing: "easeOutExpo",
            slideTimer: 1000,
            nextEl: ".vSnext",
            prevEl: ".vSprev",
            height: 265,
            width: 200
        });
    });