function startTimer(){
        var time= new Date();
        hours= time.getHours();
        mins= time.getMinutes();
        secs= time.getSeconds();
        closeTime=hours*3600+mins*60+secs;
        closeTime+=3;
        Timer();
}

function Timer(){
        var time= new Date();
        hours= time.getHours();
        mins= time.getMinutes();
        secs= time.getSeconds();
        curTime=hours*3600+mins*60+secs
        if(curTime>=closeTime)
        location = "web/home/home.php" // hier geben Sie die WeiterleitungsURL an
        else
                timeLeft();
}

function timeLeft(){
        count = closeTime-curTime;
        document.timer.counter.value = count + " secs."
        window.setTimeout("Timer()",1000)
}