Mootools works only in home

Hi, I’m having a problem using Mootools.

Using Worpress 2.8.5 and Mootools 1.2.4

I have a content slider in the home page, works fine. But in pages nothing seems to work.

For example, I’m trying to make a dependable select. If I put it in home page works prefect, but doesn’t work at any other page.

I did search at google and in this forum, but I have no answer yet.

Thanks.

(Sorry if I’m not so clear, english is not mi first language)