var dieStunde;
var zehnerMinute;
var minute;
var xxx=true;

function getZeit() {
  var dieZeit = new Date();
  dieStunde = String(Number(dieZeit.getHours()) % 12);
  if (dieStunde==0) dieStunde = 12;
  var dieMinute = String(dieZeit.getMinutes());
  zehnerMinute = (dieMinute.length>1)?dieMinute.substr(0,1):0;
  minute = dieMinute.substr(dieMinute.length-1,1)
  var ds = window.setTimeout("showZeit(dieStunde,zehnerMinute,minute)",1000);	
}

function showZeit(_st,_zm,_mi){
  var lmx = new Array(12,5,9);
  var xr = new Array("1","2","3","4","5","6","7","8","9","a","b","c");
  var zt = new Array(_st,_zm,_mi);
  for(var j=0;j<lmx.length;j++){
    for(var i = 1; i <= lmx[j]; i++){
      var nn="do"+String(j)+xr[i-1];
      document.getElementById(nn).className=(i<=zt[j])?"nan":"naus";
    }
  }
  //document.getElementById('ust').innerHTML=String(dieStunde);
  //document.getElementById('uzm').innerHTML=String(zehnerMinute);
  //document.getElementById('umi').innerHTML=String(minute);
  //document.getElementById('udp').innerHTML=(xxx)?":":"";
  xxx=(xxx)?false:true;
  getZeit();
}
window.onload=getZeit();