<!--


var nav_layering = new Array(0,'menu_abo','menu_work','menu_res','menu_news','menu_loc','menu_prog');

function nav_ShowHide(id_ul) {
	for (i=1; i<7; i++) { document.getElementById(nav_layering[i]).style.display = 'none'; }
	if (id_ul > 0) { document.getElementById(nav_layering[id_ul]).style.display = 'block'; }
}




// -->