In order to ensure a right functioning of the Geoportal, including the Internet Shop, the support of Cookies is not required. The support of JavaScript for functioning of Geobrowser is required. Before opening the Portal to the public the correct functioning of the applications is always tested on current versions of Internet browsers:

1. Microsoft Edge,
2. Mozilla Firefox,
3. Google Chrome.

Use of Proxy servers, Internet accelerators and optimizers of the HTTP, i.e. of common products that can in some way interfere with transferred data and modify them is problematic. In some instances these products do not respect standards of the HTTP protocol applied (concerned mostly exploitation of cache, hidden fields in form, etc.). Should you encounter some problems:

1. check if you are not using a product of this type, eventually adapt its settings;
2. erase cache (temporary files) of the viewer;
3. try to reload the page by pressing CTRL+F5.