function mostra_nascondi(ID) {
	var menu = document.getElementById(ID);
	var display = menu.style.display;

	menu.style.display = (display != "none") ? "none" : "block";

}

function visibile_invisibile(ID){
	var menu = document.getElementById(ID);
	var visibility = menu.style.visibility;

	menu.style.visibility = (visibility == "hidden") ? "visible" : "hidden";

}

function invisibile(ID){
	//alert(ID);
	var menu = document.getElementById(ID);
	var visibility = menu.style.visibility;

	menu.style.visibility = "hidden";
}

function visibile(ID){
	var menu = document.getElementById(ID);
	var visibility = menu.style.visibility;

	menu.style.visibility = "visible";
	
	//document.getElementById("select_marco").style.visibility = "hidden";
}


function nascondi_display(id){
	var obj = document.getElementById(id);
	obj.style.display = "none";
}
function mostra_display(id){
	var obj = document.getElementById(id);
	obj.style.display = "";
}