To everyone interested,

I found out leaving out Jquery results in MUCH MUCH MUCH faster widget behaviour.
This might be obvious, but even when doing a thousand getElementById's compared
to jquery's usage of sizzle on the mobile devices, seems to speed up things A LOT.

To those looking to improve speed and battery usage here's just a tip:
Leave out jquery, and do it all yourselves.

Keep up the good work all

- Jasper out.