function displaySubmenu (arg)
{
	var idstr = 'global_nav_submenu_'+arg;
	obj = document.getElementById(idstr);
	if(obj.style.display == "none") { obj.style.display = "block";}
    else { obj.style.display = "none";}
    return true;
}

function displayCurrentmenuitem (arg)
{
	var baseURL = get_menuImages_baseURL();
	var idstr = 'global_nav_'+arg;
	var currentImg = baseURL+'/'+idstr+'-current.gif';
	obj = document.getElementById(idstr);
	obj.src = currentImg;
	return true;
}

function restoreImages_globalmenuItem (arg)
{
	var baseURL = get_menuImages_baseURL();
	var currentDir = new RegExp("/"+arg+"/","i");
	if (document.URL.match(currentDir)) { changeImages('global_nav_'+arg,baseURL+'/global_nav_'+arg+'-current.gif'); }
	else { changeImages('global_nav_'+arg,baseURL+'/global_nav_'+arg+'.gif'); }
	return true;
}