function montre_cache(x,y) {
	document.getElementById(x).style.top=y;
	if (document.getElementById(x).style.display=='block') {
		document.getElementById(x).style.display='none';
	} else {
		document.getElementById(x).style.display='block';
	}
}

function cache(x) {
	document.getElementById(x).style.display='none';
}