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 {P} at (0,0) size 784x36
        RenderText {#text} at (0,0) size 53x17
          text run at (0,0) width 53: "Test for "
        RenderInline {I} at (0,0) size 759x35
          RenderInline {A} at (0,0) size 301x17 [color=#0000EE]
            RenderText {#text} at (53,0) size 301x17
              text run at (53,0) width 301: "http://bugs.webkit.org/show_bug.cgi?id=16426"
          RenderText {#text} at (354,0) size 759x35
            text run at (354,0) width 4: " "
            text run at (358,0) width 401: "Divs with overflow:auto: scrollbars not correctly updated when"
            text run at (0,18) width 102: "contents change"
        RenderText {#text} at (102,18) size 4x17
          text run at (102,18) width 4: "."
      RenderBlock {P} at (0,52) size 784x18
        RenderText {#text} at (0,0) size 326x17
          text run at (0,0) width 326: "The thumb should be in the middle of the scroll bar."
layer at (8,94) size 200x200 clip at (8,94) size 185x200 scrollY 200 scrollHeight 600
  RenderBlock {DIV} at (0,86) size 200x200
    RenderBlock {DIV} at (0,0) size 185x600