layer at (0,0) size 800x600
  RenderView at (0,0) size 800x600
layer at (0,0) size 800x600
  RenderBlock {HTML} at (0,0) size 800x600
    RenderBody {BODY} at (8,8) size 784x584
      RenderBlock (floating) {DIV} at (0,0) size 304x154
        RenderIFrame {IFRAME} at (0,0) size 304x154 [border: (2px inset #000000)]
          layer at (0,0) size 300x150
            RenderView at (0,0) size 300x150
          layer at (0,0) size 300x150
            RenderBlock {HTML} at (0,0) size 300x150
              RenderBody {BODY} at (8,8) size 284x134 [bgcolor=#00000080]
        RenderText {#text} at (0,0) size 0x0