Is it bad to have multiple $(document).ready(function() {}); on your page? I have a website where I load different things at different times. I fire off those p
If it's on the same page I would personally put them all in the same place so that you can't be caught out by forgetting one of the things happening on load.
I doubt the performance implications are that significant though. Have you tried benchmarking the page with them all together and apart?