DOCUMENT OBJECT MODEL

            |---self, window,
            |   parent, top
            |                  |---plugins[]
            |                  |
            |---Navigator -----|
            |                  |
            |                  |---mimeTypes[]
            |
            |
            |
window -----|---frames[]       |---forms[] ----elements[]:
            |                  |                 Button
            |                  |                 Checkbox
            |---location       |---anchors[]     Hidden
            |                  |                 Password
            |                  |                 Radio
            |---history        |---links[]       Reset
            |                  |                 Select---options[]
            |                  |                 Submit
            |---document-------|                 Text
                               |---images[]      TextArea
                               |                          
                               |
                               |---applets[]
                               |
                               |
                               |---embeds[]