#menu_astreo{display:line;}/*none, line ou block */
#menu_photovoltaique{display:none;}/*none, line ou block */
#menu_solairethermique{display:none;}/*none, line ou block */
#menu_petiteolien{display:none;}/*none, line ou block */
#menu_microhydroelectricite{display:none;}/*none, line ou block */
#menu_references{display:none;}/*none, line ou block */
#menu_contact{display:none;}/*none, line ou block */
#menu_informations{display:none;}/*none, line ou block */