timer=0;

function show_sub(id)
{

	clearTimeout(timer);
	document.getElementById('sub_sub_1').style.visibility="hidden";
	document.getElementById(id).style.visibility="visible";

}

function hide_sub(id)
{

	timer=setTimeout("menu_weg('"+id+"')", 500);
}

function menu_weg(id)
{

	document.getElementById(id).style.visibility="hidden";
}


function show_sub_sub(id)
{
	document.getElementById(id).style.visibility="visible";
	alert(id);
}