function p18ja() {
	var d = new Date();
	d = new Date(d.getTime() +1000*60*60*24*7);
	document.cookie = 'p18cookie=ja; expires='+d.toGMTString()+';'; 
	document.getElementById('overlay').style.visibility = 'hidden';
	document.getElementById('startvideo').style.visibility = 'visible';
}
function p18frage() {
	if (document.cookie.match('p18cookie=ja')) {
		document.getElementById('startvideo').style.visibility = 'visible';
		document.getElementById('overlay').style.visibility = 'hidden';
		return;
	}
	else {
		document.getElementById('startvideo').style.visibility = 'hidden';
		document.getElementById('overlay').style.visibility = 'visible';
	}
}