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  RenderView at (0,0) size 800x600
layer at (0,0) size 800x152
  RenderBlock {HTML} at (0,0) size 800x152
    RenderBody {BODY} at (0,0) size 800x152 [bgcolor=#CCFFCC]
      RenderBlock {DIV} at (0,0) size 800x152
        RenderPartObject {IFRAME} at (0,0) size 152x152 [border: (1px solid #000000)]
          layer at (0,0) size 150x150
            RenderView at (0,0) size 150x150
          layer at (0,0) size 150x52
            RenderBlock {HTML} at (0,0) size 150x52
              RenderBody {BODY} at (8,8) size 134x36
                RenderBlock {DIV} at (0,0) size 134x36
                  RenderBlock {DIV} at (0,0) size 134x18
                    RenderText {#text} at (0,0) size 33x18
                      text run at (0,0) width 33: "test 1"
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                    RenderText {#text} at (0,0) size 33x18
                      text run at (0,0) width 33: "test 2"