Removing ads in a website mirror

Being online, a few utilities allow you to block adverts and popups but it is not so easy offline.
If AdBlock Plus for Mozilla or Firefox is not efficient enough once filters have been set, you will have to modify the HTML code.

In a site capture, there are a few methods to get rid of ads and banners blocking page display or forcing you to click when you want to read another page:

Any calculation and any combination with " or ' can be found.

With javascript

W3C XHTML 1.0
W3C CSS