function MM_preloadImages() { //v3.0
    var d = document;
    if (d.images) {
        if (!d.MM_p) d.MM_p = new Array();
        var i,j = d.MM_p.length,a = MM_preloadImages.arguments;
        for (i = 0; i < a.length; i++)
            if (a[i].indexOf("#") != 0) {
                d.MM_p[j] = new Image;
                d.MM_p[j++].src = a[i];
            }
    }
}

function toggleImg(szDivID, fotoName, greyDivID)
{
    if (document.getElementById)      //gecko(NN6) + IE 5+
    {
        document.getElementById("acht").style.zIndex = 2;
        document.getElementById("zes").style.zIndex = 2;
        document.getElementById("beschrijving").style.zIndex = 1;

        // set the grey div
        if (greyDivID != null) {
            obj = document.getElementById(greyDivID);
            obj.style.zIndex = 3;
            obj.style.visibility = "visible";
            imgs = obj.getElementsByTagName("img");
            myImage = imgs[0];
            if (myImage != null) {
                myImage.src = "../images/divers/shim.gif";
            }
        }

        var obj = document.getElementById(szDivID);
        obj.style.zIndex = 4;
        obj.style.visibility = "visible";
        var imgs = obj.getElementsByTagName("img");
        var myImage = imgs[0];
        if (myImage != null) {
            myImage.src = "../images/" + globImgDir + fotoName;
        }
    }
}