Is it possible to load a different style sheet depending on the size of the browser window?

For example, if the user has their browser window width a width of less than 600px then either use a different style sheet altogether or apply a certain style to a DIV?

If it is bigger than 600px then apply a different style.

Is this at all possible?

Thanks.

Yes, but you'll need some javascript to pull it off.

Thanks.

I'll see if I can find any thing similar thats been done before.