[marcastel57]

Here are the screenshots:
upward view
http://img811.imageshack.us/img811/7...2031938459.jpg

bottomward:
http://img191.imageshack.us/img191/2...2031938529.jpg

external view:
http://img855.imageshack.us/img855/3...2031939060.jpg

after positions' shift (correct):
http://img39.imageshack.us/img39/236...2031939269.jpg