Note that you cannot simply use:

Code: Select all

body.className = "dark"

...because this will not work with multiple class names ("dark" will replace all existing class names). You need a way to add and remove class names. Fortunately, you can use this javascript.

This is really useful in other situations too.

I should note that, one day, style switching might become common user behaviour, with prominent, intuitive browser controls. If this ever happens, my method will become bad. But until then, I like my method better.