Milonic JavaScript Menu

Well, I've updated the site to the latest version. Still not happy with the refresh or flicker, but not sure how to proceed. There was no delay in 5.21.

http://www.sledmass.com
Select the menu items "About SAM" and "President's Message". There is essentially no redraw time, and it just appears as though the content is being changed. Version 5.21

Then..
http://www.sledmass.com/?NewMenu=YES and it will reference 5.728.
Do the same, switch between ...

I've been using version 5.21 for some time now. Works slick. I recently upgraded to the latest 5.728 and the menu seems to redraw slower than the 5.21 version, resulting in a screen flicker/flash where the menu should be (until it is redrawn).

I've stripped the menu out as much as possible and put ...