function openGalery(lang,category,item) {
  theLink = "/corporatif/nav/evenements-commandites/collection/artistes-oeuvres/galerie?lang=" + lang  + "&category=" + category  + "&catitem=" + item;
  window.open(theLink,'','scrollbars=yes,width=630,height=450,top=0,left=0,toolbar=yes,location=yes');
}