function showMemberData(check) {
	var pw = prompt("Bitte Passwort eingeben", "");
	if (check != undefined) {
		if (decode(check, pw, false) != "pass_ok_") {
			alert("Passwort falsch");
			numDecodeAttempts++;
			if (numDecodeAttempts >= 3) {
				alert("Dreimal falsches Passwort eingegeben!\n\nDer Verschlülungsalgorithmus reklamiert hiermit Remis wegen dreifacher Stellungswiederholung.");
				document.getElementById("foobar").style.display = "none";
			}
			return;
		}
	}
	var tables = document.getElementsByTagName("table");
	if (tables == null) {
		alert("Fehler beim decodieren der Daten");
		return;
	}
	for (var i = 0; i < tables.length; i++) {
		var rows = tables[i].getElementsByTagName("tr");
		if (rows == null) continue;
		for (var j = 0; j < rows.length; j++) {
			var cell = rows[j].getElementsByTagName("td")[0];
			if (cell.className.search(/crypt/) == -1) continue;
			var newData = decode(cell.innerHTML, pw, false);
			cell.innerHTML = newData;
			rows[j].style.display = "block";
		}
	}
	document.getElementById("foobar").style.display = "none";
}