IMGopen = "../icons/icon-node+.gif" 
IMGclose= "../icons/icon-node-.gif"

function fmenu(menuname)
{
	if( menuname.style.display == "none")
	{
	menuname.style.display = "block";
	}
	else
	{
	menuname.style.display = "none";
	}
}

function submenu(menuname,imgname)
{
	if( menuname.style.display == "none")
	{
	imgname.src = IMGclose;
	menuname.style.display = "block";
	}
	else
	{
	imgname.src = IMGopen;
	menuname.style.display = "none";
	}
}