A method of and an apparatus for efficiently navigating a plurality of contents which are reproduced in a device for reproducing interactive contents, such as a computer, a DVD player, a PDA, or a cellular phone, by using a device having a limited number of input keys. Focusing layer values are allotted to contents elements to form focusing layers and the contents elements included in any one focusing layer are provided to a user. The focusing is moved when a command to move the focusing is input from the user. Accordingly, any kind of media storing interactive contents formed by using markup language is navigable using the device having the limited number of input keys, such as a television remote controller.