// JavaScript Document
function apriDiv(livello){
	var divICareAbout = document.getElementById("menu").getElementsByTagName("div");
	totale=divICareAbout.length;
	//alert(totale);
	/*for(i=0; i<totale; i++){
		divICareAbout[i].style.display='none';
	}*/
	if(divICareAbout[livello].style.display=='none'){
		divICareAbout[livello].style.display='block';
	}else{
		divICareAbout[livello].style.display='none';
	}
}