function openClosePhoto () {
		var image=document.getElementById ('photo');
		var imageH2 = image.previousSibling;
		while (imageH2.tagName != "H2") {
			imageH2 = imageH2.previousSibling;
			if (imageH2 == null) {
				alert ("image H2  not found");
				break;
			}
		}
		if (image.style.display == "none") {
			image.style.display = "block";
			imageH2.innerHTML="photo [fermer]";
		} else {
			image.style.display = "none";
			imageH2.innerHTML="photo [ouvrir]";
		}
    }
    
    function displayMailAddresse (domain, address, withLink) {
		if (withLink) {
			document.write('<a href="mailto:');
		    document.write(address);
		    document.write('@');
		    document.write(domain);
		    document.write('">');
		}
	    document.write(address);
	    document.write('@');
	    document.write(domain);
		if (withLink) {
			document.write('</a>');
		}
    
    }