I'm glad you like my toys, and I really like how you're using them on your page :-)
A few comments...
1) I've been removing the use of xInclude() from the demos. Obviously I missed the slideOut demo ;-). xInclude() was a fun little experiment, but it's overkill and causes more problems than it solves. I've now updated the slideOut demo to not use it.
2) I have another demo (just recently completed) which may be more appropriate for your application. Check out the xSlideMenu1