This is a very big problem to check website on different browsers & platforms for a webmaster but now you can solve your problems with this website.

Browsershots.org  have a very useful  free online tool for website owner & webmasters  which helps you to check your website or blog on 82 browser and how to work your site with different browses (Firefox ,  opera, safari, chrome , internet explorer & many others) and other operating system (Linux, Windows, Mac OS & BSD).It also shows your sites’s looks and this service is completely free for everyone. If you are a webmaster, why are you late just go Browsershots.org submit your site, select browser with which you want to check your site and see how to work your website with different browser & platform.
Go to Browsershots