private static void init() {
		Class<Selenium> selC = Selenium.class;
		for (Method m : selC.getMethods()) {
			if ("void".equals(m.getReturnType().toString()) 
					||"boolean".equals(m.getReturnType().toString()) 
					|| m.getReturnType().isAssignableFrom(String.class)) {
				Class<?>[] types = m.getParameterTypes();
				if (types.length == 0) {
					methods.put(m.getName(), m);
					continue;
				}
				for (Class<?> t : types) {
					if (!t.isAssignableFrom(String.class)) {
						continue;
					}
				}
				methods.put(m.getName(), m);
			}
		}
	}