Web 2.0. is concept of web page creation in which page content is created by visitors. In the beginning of web, content was created my website owners, usually called webmasters. With increasing of Internet and web users there was idea that web page visitors are the best creators of large amount of acceptable quality and free content. There are technical way of web 2.0 where JavaScript was used to improve interactivity of pages to avoid refreshing of every single page to fetch some data from server. Also, there was improvement in graphical representation of page and shadowing of some elements like logs, buttons and others stuff.