Hello, I was wondering, with javascript is it was possible to change aspects of the URL such as the stuff after the address without re-loading the page.

I want to change this:

Code:
http://www.awebsiteaddress.com/index.html?information=true#position1
to this:

Code:
http://www.awebsiteaddress.com/index.html?information=false#position2
I dont need to change the address, just the stuff after it.

and for future reference, what is the technical name for the stuff after the address?

Thanks as always
ro0bear