function show_itinerario(cont,num_itinerari) {				
			if(document.getElementById && document.createElement){

			var ident = document.getElementById('it_' + cont);
			ident.style.marginBottom = "20px";
			
			ident.style.display = (ident.style.display=="none") ? "block" : "none";
			return(false);

		   }
}