function ge(layer) {
    return document.getElementById(layer);
}

function ShowHide(layer) {
    ge(layer).style.display == 'block' ? ge(layer).style.display = 'none' : ge(layer).style.display = 'block';
}

function PopUp(id) {
    window.open('plaat.php?fileid='+id,'','width=820, height=600, location=no, menubar=no, directories=no, toolbar=no');

}