function show(menuName){
	
	//ie,opera
	if(document.all){
		eval('document.all.'+menuName+'.style.visibility="visible"');
	}
	//firefox
	if(!document.all && document.getElementById){
		document.getElementById(menuName).style.visibility="visible";
	}
}

function hide(menuName,livello){

	var browser=checkbrowser();
	if(menuName!=''){
		//ie,opera
		if(browser=='ie'){
			eval('document.all.'+menuName+'.style.visibility="hidden"');
		}
		//firefox
		if(browser=='dom1'){
			document.getElementById(menuName).style.visibility="hidden";
		}
	}
	else{
		//ie,opera
		if(browser=='ie'){
			switch(livello){
				case 1:
					eval('document.all.menuinfo.style.visibility="hidden"');
					eval('document.all.menuservizi.style.visibility="hidden"');
				break;

				case 2:
					//menu risorse
					eval('document.all.menuLearning.style.visibility="hidden"');
					eval('document.all.menuPlaytime.style.visibility="hidden"');
					eval('document.all.menuJobonthenet.style.visibility="hidden"');
					eval('document.all.menutrovalavoro.style.visibility="hidden"');
					eval('document.all.menulavorodintorni.style.visibility="hidden"');
					eval('document.all.submenuNatixleggere.style.visibility="hidden"');
					eval('document.all.menuNatixleggere.style.visibility="hidden"');
					eval('document.all.menurisorse.style.visibility="hidden"');
				break;
			
			}
		}
		
		//firefox
		if(browser=='dom1'){
			switch(livello){
				case 1:
					document.getElementById('menuinfo').style.visibility="hidden";
					document.getElementById('menuservizi').style.visibility="hidden";
				break;

				case 2:
					//menu risorse
					document.getElementById('menuLearning').style.visibility="hidden";
					document.getElementById('menuPlaytime').style.visibility="hidden";
					document.getElementById('menuJobonthenet').style.visibility="hidden";
					document.getElementById('menutrovalavoro').style.visibility="hidden";
					document.getElementById('menulavorodintorni').style.visibility="hidden";
					document.getElementById('submenuNatixleggere').style.visibility="hidden";
					document.getElementById('menuNatixleggere').style.visibility="hidden";
					document.getElementById('menurisorse').style.visibility="hidden";			
				break;
			}
		}
	}
}