A. User interface
User interface was designed that main focus to be on the map as shown in Figure 2. Layout scheme is very simple, a combination of header which contains a logo and widget buttons, and the content area which is held by the map. Right side of map is reserved for widgets, which are giving a really nice interactivity to user interface, because they are movable, collapsible, extensible and closable. Content of these widgets is adjusted by expert agent. By the buttons in header these widgets also could be hidden or shown. These widgets are containing options and actions which gives user the interaction with the map, selecting category by interest and listing markers,