function timer(){
	var t = document.getElementById("lblTimer").innerHTML;
	if(t == ''){
		t = 16;
	}
	if(t == 0){
		window.location.href='http://www.genetic-calculator.de';
	}else{	
		t = t - 1;
		document.getElementById("lblTimer").innerHTML = t;
	}
}

window.onload=function(){
	timer();
	window.setInterval("timer()", 1000);
}