Car manufacturers make cars with bio-fuel options, different colours, and cater for people of all sizes with seat controls, safety belt adjustments and so on.
TV channels know that what appeals to one will not appeal to another.

Common sense stuff you would think and yet wannabe web designers cannot see beyond the scope of their noses.

Anyway, for those people who do actually want to make their websites work in most browsers and try and reach a bigger audience with a stable design across all platforms, Browsershots is an excellent tool for use in this aim.

From the maker of Browsershots:

Browsershots makes screenshots of your web design in different browsers. It is a free open-source online service created by Johann C. Rocholl. When you submit your web address, it will be added to the job queue. A number of distributed computers will open your website in their browser.