function changeChecked(id) {
	var box=document.getElementById(id);
	if (box.checked) {
		box.checked=false;
		}
	else {
		box.checked=true;
	}
}
function changeVisibility(id) {
	var tr = document.getElementById('tr' + id);
	tr.style.visibility="visible";
	var submit= document.getElementById('submit' + (id - 1));
	submit.style.visibility="hidden";
}
function color(obj, couleur) { //Pour colorer les lignes de valeur
	obj.style.backgroundColor= couleur;
}

function changeDisplayNews(id) {
    var tr = document.getElementById('news' + id);
    if (tr.style.display == "none") {
        tr.style.display="block";
        tr.style.visibility="visible";
    }
    else {
        tr.style.display="none";
        tr.style.visibility="hidden";
    }
    tr.reload(true);
}