<form action="http://www.xxx.de/skills.php" method="POST">
<input type="hidden" name="action" value="skill">
<input type="hidden" name="form" value="">
<input type="hidden" name="skill" value="Energie">
<input type="Submit" name="Schlafen" value="Schlafen"  class="formular_transp">
</form>

document.formname.submit();

<script type="text/javascript">
var NS6 = (!document.all && document.getElementById) ? true : false;
var NS = document.layers ? 1:0;
var IE = document.all ? 1:0;
var gecko = document.getElementById ? 1:0;
var wielang = 5;
var target="test";
function countdown()
{
    sekunden=wielang;
    stunden=Math.floor(sekunden/3600);
    sekunden-=stunden*3600;
    minuten=Math.floor(sekunden/60);
    sekunden-=minuten*60;
    text=stunden+":"+minuten+":"+sekunden;
    if (NS)
    {
        x = document.layers[target];
        text2 = '

' + text + '</p>';
        x.document.open();
        x.document.write(text2);
        x.document.close();
    }
    else if (IE)
    {
        x = document.all[target];
        x.innerHTML = text;
    }
    else if (gecko)
    {
        x = document.getElementById(target);
        x.innerHTML = text;
    }
    wielang--;
    if (wielang!=0)
        window.setTimeout("countdown();",1000)
    else
        document.formname.submit();
}
</script>
<form action="http://www.xxx.de/" method="POST">
 <input type="hidden" name="action" value="skill">
 <input type="hidden" name="form" value="">
 <input type="hidden" name="skill" value="Energie"><input type="Submit" name="Schlafen" value="Schlafen"  class="formular_transp">

  </td>
<span id="test">Hier sollte ein Countdown stehen</span> 
<script type="text/javascript">
countdown()
</script></form>