function button(vi) {
            if (vi == 1) {
                openPlayer(2, "Customer Success Stories");
            }
            if (vi == 2) {
                openPlayer(7, "Customer Success Stories");
            }
            if (vi == 3) {
                openPlayer(2, "Product Demo");
            }
            if (vi == 4) {
                openPlayer(1, "Customer Success Stories");
            }
        }
        function openPlayer(no, cat) {            
            var link = {
                player: "iframe",
                content: "../en_dynatv/player.aspx?htmlK=" + (no - 1) + "&htmlCateg=" + cat,
                height: 480,
                width: 930
            };
            Shadowbox.open(link);
        }