function NavigateThrough(event) {
    if (!document.getElementById) return;
    if (window.event) event = window.event;
    if (event.ctrlKey) {
        if(event.altKey) {
            var link = null;
            var href = null;
            switch (event.keyCode ? event.keyCode : event.which ? event.which : null)
            {
                case 0x25:
                    if(document.getElementById("Previous")) {
                        link = document.getElementById("Previous");
                    }
                    break;
                case 0x27:
                    if(document.getElementById("Next")) {
                        link = document.getElementById("Next");
                    }
                    break;
                case 0x24:
                    href = '/';
                    break;
                case 68:
                    if(document.getElementById("Domus")) {
                      link = document.getElementById("Domus");
                    }
                    break;
                case 80:
                    if(document.getElementById("Persona")) {
                      link = document.getElementById("Persona");
                    }
                    break;
                case 83:
                    if(document.getElementById("Sodalis")) {
                      link = document.getElementById("Sodalis");
                    }
                    break;
                case 82:
                    if(document.getElementById("Recordum")) {
                      link = document.getElementById("Recordum");
                    }
                    break;
                case 84:
                    if(document.getElementById("Totum")) {
                      link = document.getElementById("Totum");
                    }
                    break;
            }
            if (link && link.href) document.location = link.href;
            if (href) document.location = href;
        }
    }			
}