document.onkeydown = NavigateThrough;

function NavigateThrough (event) {
    if (!document.getElementById) return;

    if (window.event) event = window.event;

    if (event.ctrlKey){
        var link = null;
        var href = null;
        switch (event.keyCode ? event.keyCode : event.which ? event.which : null){
            case 0x27:
                link = document.getElementById ('NextLink');
                break;
            case 0x25:
                link = document.getElementById ('PrevLink');
                break;
            case 0x24:
                href = '/';
                break;
        }
        if (link && link.childNodes[0]) document.location = link.childNodes[0];
        if (href) document.location = href;
    }           
}