// JavaScript source code
function closefenster() {
    document.getElementById("image-viewer").style.visibility = "hidden";
    document.getElementById("image-viewer-background").style.visibility = "hidden";
}
function openfenster() {
    document.getElementById("image-viewer").style.visibility = "visible";
    document.getElementById("image-viewer-background").style.visibility = "visible";
    var imagepath = document.getElementById("image-gross").style.backgroundImage;
    var splittedpath = imagepath.split("/");
    var dateiname = splittedpath[splittedpath.length - 1];
    dateiname = dateiname.slice(0, (dateiname.length - 1));
    var dateipfad = "images/" + dateiname;
    document.getElementById("image-frame").src = dateipfad;
}