function lightbox (img, l, h) {
	with (document) {
		getElementById('LightboxContent').innerHTML 					= '<img src="images/' + img.toString () + '" alt="" />';
		getElementById('LightboxContent').style.width 				= l.toString () + 'px';
		getElementById('LightboxContent').style.height 				= h.toString () + 'px';
		getElementById('LightboxContainer').style.width 			= (l+2).toString () + 'px';
		getElementById('LightboxContainer').style.height 			= (h+37).toString () + 'px';
		getElementById('LightboxContainer').style.marginLeft 	= Math.round(-1*l/2).toString () + 'px';
		getElementById('LightboxContainer').style.marginTop 	= Math.round(-1*h/2).toString () + 'px';
		
		getElementById('LightboxContainer').style.display 		= 'block';	
		getElementById('Lightbox').style.display 							= 'block';	
	}
}

function fermer () {
	document.getElementById('LightboxContainer').style.display 	= 'none';	
	document.getElementById('Lightbox').style.display 					= 'none';	
}