Simple, clear navigation on Frederick County website

Frederick County, Maryland, uses a very simple red/green system on its website.  The only navigation buttons with a colored circle relate to emergency preparedness. In normal times – the button is green:

Non-emergency mode
(Non-emergency mode)

But, for emergency – including dangerous weather – notifications – the same button will be red and flashing. From the Frederick County website:

When this bar is on the homepage with a flashing red light, an emergency
condition exists. Clicking on this bar will lead to the Emergency/Weather Notices webpage, with information from emergency officials.

(Used during emergencies)
(Used during emergencies)

I assume that they’ve got a macro – or some other one-step process to substitute the red navigation button for the green.

It’s a nice touch – the feature – and the website – were designed by CivicPlus, a Kansas-based outfit that designs websites for governments and schools. Here’s a link to their portfolio.