Thema: script in joomla

hi, ich hab des problem, dass mir joomla beim html code einfügen immer die scripts wieder rausgeschmissn werden.
mein script:

Code:

<!--
var now = new Date();
var year = now.getYear();
if (year < 1900) {
         year += 1900;
}
var end = new Date("May 10, " + 2009 + " 00:00:00 GMT");
document.write(' <span id="c1"></span>');
document.write(' <span id="c2">;</span>');
document.write('');
function toSt2(n) {
  s = "";
  if (n < 10) s += "0";
  return (s + n).toString();
}
function toSt3(n) {
  s = "";
  if (n < 10) s += "00";
  else if (n < 100) s += "0";
  return (s + n).toString();
}
function countdown() {
  d = new Date();
  count = Math.floor(end.getTime() - d.getTime());
  if(count > 0) {
    miliseconds = toSt3(count%1000); count = Math.floor(count/1000);
    seconds = toSt2(count%60); count = Math.floor(count/60);
    minutes = toSt2(count%60); count = Math.floor(count/60);
    hours = toSt2(count%24); count = Math.floor(count/24);
    days = count;
    document.getElementById('c1').innerHTML = days + ' Tage ';
    document.getElementById('c2').innerHTML = hours + ' Stunden ' + minutes + ' Minuten ' + seconds + ' Sekunden ';
    setTimeout("countdown()", 50);
  }
}
window.onload=countdown;
-->
</script></em>