var gnNumImages = 7

function init(){
    var sActive = docParams.getParameter('paginanr');

    initImages()
    initMenu();
    if (sActive == null) {
        sActive = '1'
    }
    showMenu(parseInt(sActive));
}

function showMenu(nMenu) {

    var oNewLogo;
    var oLogo

    oNewLogo = document.getElementById('logo' + nMenu);
    if (oNewLogo) {
        oNewLogo.style.visibility = 'visible';
    }
    for (i=1; i<=gnNumImages; i++) {
        oLogo = document.getElementById('logo' + i)
        if (i != nMenu) {
            oLogo.style.visibility = 'hidden';
        }
    }
}

function initMenu() {
    var oAnchor;
    var i;

    for (i=1; i<=gnNumImages; i++) {
        oAnchor = document.getElementById('topmenuitem' + i)
        if (oAnchor) {
            oAnchor.parentNode.onmouseover = new Function('showMenu(' + i + ');');
        }
    }
}

function initImages() {

    var oLogoFrame;
    var oDiv;
    var oFirstNode = null;

    oLogoFrame = document.getElementById("logoframe");
    if (oLogoFrame) {
        if (oLogoFrame.hasChildNodes()) {
            oFirstNode = oLogoFrame.childNodes.item(0);
        }
        for (i=1; i<=gnNumImages; i++) {
            oDiv = document.createElement('DIV');
            oDiv.id = 'logo' + i;
            oDiv.className = 'logo logo' + i;
            if (oFirstNode) {
                oLogoFrame.insertBefore(oDiv, oFirstNode);
            }
            else {
                oLogoFrame.appendChild(oDiv);
            }
        }
    }
}

window.onload = init;