function show_date(id_name){
var weekdays = new Array("Sonntag","Montag","Dienstag","Mittwoch","Donnerstag",
"Freitag","Samstag");
var now = new Date();
var day = now.getDate();
var month = now.getMonth();
var year = now.getFullYear();
var weekday = now.getDay();
var day0 =((day < 10) ? "0" : "");
var month0 = ((month < 10) ? ".0" : ".");
var today = day0 + day + month0 + month + "." + year;
var date_to_show = weekdays[weekday] + ", " + today;
document.getElementById(id_name).innerHTML = date_to_show;
}