http://www.woothemes.com/ http://www.yootheme.com/ http://www.themezilla.com/ http://themeforest.net/ - All of them have a live demo of templates. It looks the same type, everyone uses the same GET request - hence this is a ready-made option. Do not tell me how to do this, demo, like theirs. Or rather, with what help is it done?
Here is a link to one of the examples: http://demo2.woothemes.com/?name=artificer