function affiche_popup(lang,page,rubrique) {
		if(rubrique != page_encours){
			page_encours = rubrique;
			$("popup").style.visibility = 'visible';
			$('bla').style.display = '';
			$('bla').innerHTML = '<table style="height:100%; width:100%"><tr><td style="vertical-align:middle; text-align:center"><img src="'+url+'images/logo-gris.jpg" class="chargement" /><br /><br /><img src="'+url+'images/loader.gif" /></td></tr></table>';
			
			
			data = 'action=affiche_popup';
			data += '&lang='+lang;
			data += '&page='+page;
			data += '&rubrique='+rubrique;
			
			
			switch(page){
				case "gamme" : nompage = 'popup_gamme.html'; break;
				case "realisation" : nompage = 'popup_realisations.html'; break;
				case "presse" : nompage = 'popup_presse.html'; break;
				default : nompage = 'popup_modele1.html'; break;
			}
			
			
			new Ajax(url+lang+'/'+nompage, {
				method: 'post',
				data: data,
				update: $('bla')
			}).request();
		}
		
		return false;
	}