var hiding_menu_id = null;

function show_menu(id)
{
	abort_hide(id);
	var mn_Id = 'mn_' + id;
	var o_menu = document.getElementById(mn_Id);
	o_menu.style.visibility = 'visible';
}

function hide_menu(id)
{
	if ( hiding_menu_id != null ) execute_hide(hiding_menu_id);
	hiding_menu_id = id;
	window.setTimeout(function() { execute_hide(id);}, 300 );
}

function execute_hide(id)
{
	if (id == hiding_menu_id)
	{
		var menu_id = 'mn_' + id;
		var o_menu = document.getElementById(menu_id);
		o_menu.style.visibility = "hidden";
		hiding_menu_id = null;
	}
}

function abort_hide(id)
{
	if ( id == hiding_menu_id ) hiding_menu_id = null;
}

function abortHide(mnId)
{
	if ( hidingMenu == mnId ) hidingMenu = null;
}