public static Tex getgrid(final String nm) {
		return (AccessController.doPrivileged(new PrivilegedAction<Tex>() {
			public Tex run() {
				synchronized (grids) {
					if (grids.containsKey(nm)) {
						return (grids.get(nm));
					} else {
						loader.req(nm);
						return (null);
					}
				}
			}
		}));
	}