Thanks Scott, you're right about the moock site, it is good and very helpfull!

btw. would you mind having a look on my question about preloaders I basically solved the second question although I would like to know a bit more about the SetTimer function. But I still can't figure out how to deal with my first question about running a preloader with a 'if Frame is loaded statement' and meanwhile giving the user the possibility to jump to loaded parts of the main movie?