function setNavmenu() {
     pic = new Image(32, 21);
     pic.src= "/images/hover.jpg";
     setArrow(getPosition(currentPage()));
}

function getPosition(url) {
    switch (url) {
        case "index.html":
            return 0;
            break;
        case "zelfwijszer.html":
            return 0;
            break;
        case "oprichtster.html":
            return 33;
            break;
        case "loopbaan_coaching.html":
            return 66;
            break;
        case "burnout.html":
            return 101;
            break;
        case "outplacement.html":
            return 132;
            break;
        case "personal_coaching.html":
            return 164;
            break;
        case "creatieve_werkvormen.html":
            return 198;
            break;
        case "nieuws.html":
            return 230;
            break;
        case "links.html":
            return 262;
            break;
        case "contact.html":
            return 295;
            break;
        default:
            return 0;            
    }
}

function currentPage() {
    return getPage(document.location.href);
}

function getPage(url) {
    return url.substring(url.lastIndexOf("/") + 1, url.length);
}

function setArrow(offset) {
    var div = document.getElementById("navigator");
    if (div) {
        div.style.top += offset + "px";
    }
}

function scroll(direction) {
    var div = document.getElementById("content");
    var increment = 50;
    if (direction == 'up') increment *= -1;
    div.scrollTop += increment;
}

function setHover(url) {
    var div = document.getElementById("hover");
    if (div) {
        var offset = getPosition(getPage(url));
        div.style.top = offset + "px";
        div.style.display = 'block';
    }
}

function restore() {
    var div = document.getElementById("hover");
    if (div) {
        div.style.display = 'none';
    }
}