Sounds like you badly need NoScript. More than most, in fact, with a netbook and limited battery capacity.
In this day and age many websites present dynamic content with ajax, xmlhttp and what not, so noscript is not a viable option
This is exactly why you need NoScript. All that "dynamic content" is running scripts and draining your battery. If you need it, fine, turn it on. NoScript does not disable all
scripts, only the ones you decide you don't want.
(kind of like driving a car without heat or a/c).
Does your A/C have an on-off switch?
The right thing for website operators to do is to present the user a choice.
Waiting for untrusted web site operators to do the right thing is going to be disappointing for you.