SCROLLIN' ALONG...
Phase I - Body < Peep-Hole
Results - IExplorer 7.0

210 GROUP HTML - Overflow: Default			BODY - Overflow:
210 GROUP HTML - Overflow: Default			Default	Visible	Hidden	Auto	Scroll
Vertical Scroll Test	Default Scroll Bars	V
	Default Scroll Bars	H
	Body Scroll Bars	V
	Body Scroll Bars	H
Horizontal Scroll Test	Default Scroll Bars	V
	Default Scroll Bars	H
	Body Scroll Bars	V
	Body Scroll Bars	H

220 GROUP HTML - Overflow: Visible			BODY - Overflow:
220 GROUP HTML - Overflow: Visible			Default	Visible	Hidden	Auto	Scroll
Vertical Scroll Test	Default Scroll Bars	V
	Default Scroll Bars	H
	Body Scroll Bars	V
	Body Scroll Bars	H
Horizontal Scroll Test	Default Scroll Bars	V
	Default Scroll Bars	H
	Body Scroll Bars	V
	Body Scroll Bars	H

230 GROUP HTML - Overflow: Hidden			BODY - Overflow:
230 GROUP HTML - Overflow: Hidden			Default	Visible	Hidden	Auto	Scroll
Vertical Scroll Test	Default Scroll Bars	V
	Default Scroll Bars	H
	Body Scroll Bars	V
	Body Scroll Bars	H
Horizontal Scroll Test	Default Scroll Bars	V
	Default Scroll Bars	H
	Body Scroll Bars	V
	Body Scroll Bars	H

240 GROUP HTML - Overflow: Auto			BODY - Overflow:
240 GROUP HTML - Overflow: Auto			Default	Visible	Hidden	Auto	Scroll
Vertical Scroll Test	Default Scroll Bars	V
	Default Scroll Bars	H
	Body Scroll Bars	V
	Body Scroll Bars	H
Horizontal Scroll Test	Default Scroll Bars	V
	Default Scroll Bars	H
	Body Scroll Bars	V
	Body Scroll Bars	H

250 GROUP HTML - Overflow: Scroll			BODY - Overflow:
250 GROUP HTML - Overflow: Scroll			Default	Visible	Hidden	Auto	Scroll
Vertical Scroll Test	Default Scroll Bars	V
	Default Scroll Bars	H
	Body Scroll Bars	V
	Body Scroll Bars	H
Horizontal Scroll Test	Default Scroll Bars	V
	Default Scroll Bars	H
	Body Scroll Bars	V
	Body Scroll Bars	H

Some Observations:

The infamous, ever-present Default Vertical Scrollbar only happens if the 'overflow' property of the html element is not specified (i.e. default value). This is a deliberate Band-Aid ("Patch" as MS likes to call them) to avoid premature activation of the Default Horizontal Scrollbar.
This "Patch" can be Un-Done, and this ever-present Default Vertical Scrollbar can be removed easily and legally (i.e. without any hacks!), as discussed in detail, in The Disappearing Act. www.web-zonez.com/screen/100/dis1.html
Othervise, the set of results for the default and visible values of the 'overflow' property of the html were identical, which clearly indicates that the default value of 'overflow' property of the html is auto.
Again, the set of results for the default and visible values of the 'overflow' property of the body were identical, which clearly indicates that the default value of 'overflow' property of the body is visible.
All the test results clearly indicate that the Default scrollbars belong to the html element and are controlled by the setting(s) of the same.
The body element extended vertically/horizontally up the limits of Peep-Hole, for the default and visible values of the overflow property in version 6. However, the body element retained its specified height/width in version 7, as it is expected to.

What is Next?

We would suggest that you proceed to review the results of the same set of experiments for Mozilla 1.7 - Part 3. www.web-zonez.com/screen/scroll/matrix2/2mzresults.html

However, you can jump to any other part of this study, from the Contents of This Topic on the Auxiliary Panel,

Feed-back & Comments:: Please send any comments, opinions, and even contributions on this subject, using the Feed-Back Form.
Further Reading:: You can review the list of Related Articles, with brief descriptions and links on the Auxiliary Panel,

SCROLLIN' ALONG... Phase I - Body < Peep-Hole Results - IExplorer 7.0

Some Observations:

What is Next?

Obvious is not ALWAYS Obvious!

SCROLLIN' ALONG...
Phase I - Body < Peep-Hole
Results - IExplorer 7.0