Abstract: Although the application of virtual environments (VE) and Internet promoted the computer technique greatly, it also brought some human factor problems, such as 搃mmersion?in VE, 揹isorientation?in WWW and the design of the navigational map. Many studies revealed that it was important to display the information, collocate browse background and design navigational maps properly in VE and WWW for reducing cognitive burden and improving 搃mmersion?in VE.

Key words: virtual environments, www, hypertext, disorientation