function cambia_stile_on(nome_div, nome_li){
	if (document.getElementById){
		div=document.getElementById(nome_li);
		a=document.getElementById(nome_div);
			
		div.style.backgroundImage="url(images/menu_on_2.jpg)";
		a.style.color="#7EC7DA";
	}
}

function cambia_stile_out(nome_div, nome_li){
	if (document.getElementById){
		div=document.getElementById(nome_li);
		a=document.getElementById(nome_div);

		div.style.backgroundImage="url(images/menu_off_2.gif)";
		a.style.color="#ffffff";
	}
}


<!--
function MM_showHideLayers() { //v9.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) 
  with (document) if (getElementById && ((obj=getElementById(args[i]))!=null)) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}
//-->

function mostra_nascondi_div(id_div){
	if(document.getElementById(id_div)){
		nome_div=document.getElementById(id_div);

		if(nome_div.style.display=="none"){
			nome_div.style.display="block";
		}
		else if(nome_div.style.display=="block"){
			nome_div.style.display="none";
		}
	}
}

function nascondi_div(id_div){
	if(document.getElementById(id_div)){
		nome_div=document.getElementById(id_div);
		
		if(nome_div.style.display=="block"){
			nome_div.style.display="none";
		}
	}
}