/* DHTML-Bibliothek */
var DHTML = 0, DOM = 0, MS = 0, NS = 0, OP = 0;

function DHTML_init() {

 if (window.opera) {
     OP = 1;
 }
 if(document.getElementById) {
   DHTML = 1;
   DOM = 1;
 }
 if(document.all && !OP) {
   DHTML = 1;
   MS = 1;
 }
if(document.layers && !OP) {
   DHTML = 1;
   NS = 1;
 }
}

function getElem(p1,p2,p3) {
 var Elem;
 if(DOM) {
   if(p1.toLowerCase()=="id") {
     if (typeof document.getElementById(p2) == "object")
     Elem = document.getElementById(p2);
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="name") {
     if (typeof document.getElementsByName(p2) == "object")
     Elem = document.getElementsByName(p2)[p3];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="tagname") {
     if (typeof document.getElementsByTagName(p2) == "object" || (OP && typeof document.getElementsByTagName(p2) == "function"))
     Elem = document.getElementsByTagName(p2)[p3];
     else Elem = void(0);
     return(Elem);
   }
   else return void(0);
 }
 else if(MS) {
   if(p1.toLowerCase()=="id") {
     if (typeof document.all[p2] == "object")
     Elem = document.all[p2];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="tagname") {
     if (typeof document.all.tags(p2) == "object")
     Elem = document.all.tags(p2)[p3];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="name") {
     if (typeof document[p2] == "object")
     Elem = document[p2];
     else Elem = void(0);
     return(Elem);
   }
   else return void(0);
 }
 else if(NS) {
   if(p1.toLowerCase()=="id" || p1.toLowerCase()=="name") {
   if (typeof document[p2] == "object")
     Elem = document[p2];
     else Elem = void(0);
     return(Elem);
   }
   else if(p1.toLowerCase()=="index") {
    if (typeof document.layers[p2] == "object")
     Elem = document.layers[p2];
    else Elem = void(0);
     return(Elem);
   }
   else return void(0);
 }
}

function setCont(p1,p2,p3,p4) {
   if(DOM && getElem(p1,p2,p3) && getElem(p1,p2,p3).firstChild)
     getElem(p1,p2,p3).firstChild.nodeValue = p4;
   else if(MS && getElem(p1,p2,p3))
     getElem(p1,p2,p3).innerText = p4;
   else if(NS && getElem(p1,p2,p3)) {
     getElem(p1,p2,p3).document.open();
     getElem(p1,p2,p3).document.write(p4);
     getElem(p1,p2,p3).document.close();
   }
}

DHTML_init();
<!--
function ZeitAnzeigen() {
var Wochentagname =  new Array("Sonntag","Montag","Dienstag","Mittwoch","Donnerstag","Freitag","Samstag");

 var Jetzt = new Date();
 var Tag = Jetzt.getDate();
 var Monat = Jetzt.getMonth() + 1;
 var Jahr = Jetzt.getYear();
 if(Jahr < 999) Jahr += 1900;
 var Stunden = Jetzt.getHours();
 var Minuten = Jetzt.getMinutes();
 var Sekunden = Jetzt.getSeconds();
 var WoTag = Jetzt.getDay();
 var Vortag  = ((Tag < 10) ? "0" : "");
 var Vormon  = ((Monat < 10) ? ".0" : ".");
 var Vorstd  = ((Stunden < 10) ? "0" : "");
 var Vormin  = ((Minuten < 10) ? ":0" : ":");
 var Vorsek  = ((Sekunden < 10) ? ":0" : ":");
 var Datum = Vortag + Tag + Vormon + Monat  + "." + Jahr;
 var Uhrzeit = Vorstd + Stunden + Vormin + Minuten + Vorsek + Sekunden;
 var Gesamt = "am "+Wochentagname[WoTag] + ", den " + Datum + " um " + Uhrzeit+" Uhr";

 if(DHTML) {
   if(NS) setCont("id","Uhr",null,"<span class=\"Uhr\">" + Gesamt + "<\/span>");
   else   setCont("id","Uhr",null,Gesamt);
 }
 else return;
 window.setTimeout("ZeitAnzeigen()",1000);
}
//-->
ZeitAnzeigen();