function show(seite) {
	bilder = window.open(seite,"bilder","width=600,height=500,resizable=yes,scrollbars=yes");
	window.bilder.focus();
}
function showbox(box_id){
	if (o = document.getElementById(box_id)) {
		o.style.display = 'block';
	}
}

function hidebox(box_id){
	if (o = document.getElementById(box_id)) {
		o.style.display = 'none';
	}
}