function show (src, idouter, idinner) {
    var outer = document.getElementById(idouter);
    var inner = document.getElementById(idinner);
    inner.innerHTML = '<img src="' + src + '">';
    outer.style.display = 'block';
    return false;
}

function hide (idouter) {
    var outer = document.getElementById(idouter);
    outer.style.display = 'none';
    return false;
}

function remove (type, ihtml) {
    document.getElementById('istellen'+type).innerHTML = '<img src="' + ihtml + '" alt="">';
    document.forms['register']['i_'+type].value = '';
    document.getElementById('sizes'+type).innerHTML = '';
    return false;
}

function removeit (name, id) {
    document.forms.myform[name].value = '';
    document.getElementById(id).innerHTML = '';
}