// CLIQUE SUR UNE IMAGE (SELECTION)
Event.observe(document.body, 'click', function(event) {   
	var element = Event.element(event);
		if ('IMG' == element.tagName && element.hasClassName('article')) {
			showfullart(element);
		}
	}
);

// VOIR UNE l'IMAGE EN TAILLE REELLE
function showfullart(element){
			image_reelle = element.getAttribute('alt');
			var url = 'scripts/fullsize_ajax.php';
			var parametres = 'src=' + image_reelle + '&full=1'  + '&sous_dossier=article';
				var myAjaxImgFull = new Ajax.Request(
				url,
				{
				method: 'get',
				parameters: parametres,			
				onComplete: function(requete) {
				$('imagereelle').innerHTML = requete.responseText;
				}});
			$('popimage').show();
}