$(document).ready(function() {
    $('.shot').click(function(e) {
        //Get image link
        var test = $(this).attr('src');
        test = test.match(/src=(.*?)&/);
        var str = String(test);
        var str = str.substr(str.indexOf(',')+1);

        //GEt Id and change image
        var id = str.match(/\d+_\d/);       
        var newImg = "/image-content/product/large/"+id+".jpg";
        $('#imageCont .main').attr('src', newImg);
    });
});