var timerID;
var timerRunning = false;
var today = new Date();
var enday = new Date();
var secPerDay = 0;
var minPerDay = 0;
var hourPerDay = 0;
var secsLeft = 0;
var secsRound = 0;
var secsRemain = 0;
var minLeft = 0;
var minRound = 0;
var minRemain = 0;
var timeRemain = 0;


function stopclock(){
if(timerRunning)
clearTimeout(timerID);
timerRunning = false;
}

function startclock() {
stopclock();
showtime();
}


function showtime () {
today = new Date();
enday = new Date("July 9, 2010 00:00");
enday.setYear("2010");
secsPerDay = 1000 ;
minPerDay = 60 * 1000 ;
hoursPerDay = 60 * 60 * 1000;
PerDay = 24 * 60 * 60 * 1000;



secsLeft = (enday.getTime() - today.getTime()) / minPerDay;

secsRound = Math.round(secsLeft);

secsRemain = secsLeft - secsRound;

secsRemain = (secsRemain < 0) ? secsRemain = 60 - ((secsRound - secsLeft) * 60) : secsRemain = (secsLeft - secsRound) * 60;

secsRemain = Math.round(secsRemain);



minLeft = ((enday.getTime() - today.getTime()) / hoursPerDay);

minRound = Math.round(minLeft);

minRemain = minLeft - minRound;

minRemain = (minRemain < 0) ? minRemain = 60 - ((minRound - minLeft)  * 60) : minRemain = ((minLeft - minRound) * 60);

minRemain = Math.round(minRemain - 0.495);



hoursLeft = ((enday.getTime() - today.getTime()) / PerDay);

hoursRound = Math.round(hoursLeft);

hoursRemain = hoursLeft - hoursRound;

hoursRemain = (hoursRemain < 0) ? hoursRemain = 24 - ((hoursRound - hoursLeft)  * 24) : hoursRemain = ((hoursLeft - hoursRound) * 24);

hoursRemain = Math.round(hoursRemain - 0.5);



daysLeft = ((enday.getTime() - today.getTime()) / PerDay);

daysLeft = (daysLeft - 0.5);

daysRound = Math.round(daysLeft);

daysRemain = daysRound;



if (daysRemain == 1) 
{
  day_rem = " Tag, "
}
else
{
  day_rem = " Tage, "
}

if (hoursRemain == 1) 
{
  hour_rem = " Stunde, "
}
else
{
  hour_rem = " Stunden, "
}

if (minRemain == 1) 
{
  min_rem = " Min., "
}
else
{
  min_rem = " Min., "
}

if (secsRemain == 1) 
{
  sec_rem = " Sek."
}
else
{
  sec_rem = " Sek."
}
  
timeRemain = daysRemain + day_rem + hoursRemain + hour_rem + minRemain + min_rem + secsRemain + sec_rem;

document.birthdayform.mybirthday.value = timeRemain;
timerID = setTimeout("showtime()",1000);
timerRunning = true;

if (daysRemain < 0) {

clearTimeout(timerID);
timerRunning = false;
document.birthdayform.mybirthday.value = "Happy Birthday, Chrige!";
}

}