function change(picsrc,newpic) {
    window.document[picsrc].src = newpic;
}

function show (member) {
    if (document.getElementById) {
        if (document.getElementById(member).style.display == "block") {
            document.getElementById(member).style.display = "none";
        } else {
            document.getElementById(member).style.display = "block";
        }
    }
}

function change2(inhalt) {
   document.getElementById('bild').src  = inhalt;
}