Need help with not realoding the whole page everytime in IE

Hi,

I want the website to not reload the categories and pages menu, sidebars, and the header everytime user navigates throught the website in IE browsers.

I want it to load like it does in Mozilla. Take a look at http://speedywap.com in Mozilla.

Thanks in advance. Whoever helps successfully will get a adspace for free in the left sidebar below the translator for a month.

I am already using wp-supercache.
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Also please suggest successful ways to serve already gzipped javascript and css from the host directory to the browsers which suppoort it; and serve the uncomressed javascript and css to browsers which dont support gzipped css and js.
I will increase the itme of adspace to 2 months

Regards and good luck!!!
Vish