<!-- Mettre les noms des 2 images on off dans la page ex:<a href="javascript:Layer('ZoneLienA','on.jpg','off.jpg');"><strong>Assistance domiciliaire</strong></a>-->
function Layer(sNomId, sImgSrcOn, sImgSrcOff) {
	// Vérifier si on a un ANCHOR
	if (sNomId.lastIndexOf("#") >= 0) {
		var sNomIdTmp = sNomId
		sNomId = sNomIdTmp.substr(0,sNomIdTmp.lastIndexOf("#"));
		sNomAnchor = sNomIdTmp.substr(sNomIdTmp.lastIndexOf("#") + 1, sNomIdTmp.length);
		window.location.hash = sNomAnchor;
	}

	var el = document.getElementById(sNomId);
	var intIndImgPos = sNomId.length-1;
	if ((sImgSrcOn != '') && (sImgSrcOff !='')) {
		var elImg = 'L' + sNomId.substr(intIndImgPos,1);
	}

	var sDisplayLayer = el.style.display;
	if (sDisplayLayer == '') {
		sDisplayLayer = 'none';
	}
	if (sDisplayLayer == 'block') {
		el.style.display = "none";
		if ((sImgSrcOn != '') && (sImgSrcOff !='')) {
			document.images[elImg].src = sImgSrcOn;
			document.images[elImg].title = 'Ouvrir';
		}
	} else if (sDisplayLayer == 'none') {
		el.style.display = "block";
		if ((sImgSrcOn != '') && (sImgSrcOff !='')) {
			document.images[elImg].src = sImgSrcOff;
			document.images[elImg].title = 'Fermer';
		}
	}
//alert(sNomId + ' ==> ' + document.getElementById(sNomId).offsetHeight + ' : ' + sImgSrcOn + ' : ' + sImgSrcOff);
//	setTall('content', sNomId);
}  
<!-- Sert pour différents niveaux dans un site -->
/*function LayerDefine(sNiveau, sNomId, sImgNameArrow) {
	var el = document.getElementById(sNomId);
	var intIndImgPos = sNomId.length-1;
	var elImg = sImgNameArrow + sNomId.substr(intIndImgPos,1);
	var sDisplayLayer = el.style.display;
	if (sDisplayLayer == '') {
		sDisplayLayer = 'none';
	}
	if (sDisplayLayer == 'block') {
		el.style.display = "none";
		document.images[elImg].src = sNiveau + 'img/bt_ass_juri.jpg';
		document.images[elImg].title = 'Ouvrir';
	} else if (sDisplayLayer == 'none') {
		el.style.display = "block";
		document.images[elImg].src = sNiveau + 'img/bt_ass_juri.jpg';
		document.images[elImg].title = 'Fermer';
	}
}*/