function switchPresse(to,id) {
	if(to==1) {
		document.getElementById("pt" + id).style.display="none";
		document.getElementById("pf" + id).style.display="block";
	} else {
		document.getElementById("pf" + id).style.display="none";
		document.getElementById("pt" + id).style.display="block";
	}
}