jQuery CSS — force cursor to change on request (not only when mouse moves after request)?

Best way i can demonstrate is by example, if you go here and move your mouse to the area right of the portfolio images, a S arrow appears.

When the user scrolls to the bottom of the page, i ask for the arrow to change to a N arrow. It does this, but it only reflects the change once the user moves the mouse, which is not intuitive.

Is there a 开发者_如何学JAVAway i can force the cursor to change without the user having to move his mouse first?

I don't think you can, in my experience.

In safari 5.1.1 all works fine... It changes automatically without moving the mouse when I'm about halfway the image of "creative review class of 2008" Seems to be browser dependent then :s