You include jquery.js twice. In my experience this can cause jquery to consume a lot of cpu.
Your laptop may be overheating.
Question
I have a Dell Vostro laptop with Windows 7, 4GB RAM and intel i3 and I check my website under FireFox, Chrome and SeaMonkey.
The page is here and jQuery is included on the html
http://magician.sdf-eu.org/zee/Click%20This%20One%20To%20View%20What%20I%20Have%20So%20Far.html
If I do not open the webpage I am working on, my laptop does not crash
Thanks a lot for your help, Stack Overflow
Solution
You include jquery.js twice. In my experience this can cause jquery to consume a lot of cpu.
Your laptop may be overheating.