note: again, browser is actually SlimBrowser?.

while editing page (in tutorial, at least),
hit the tab key.
caused a dialog to pop up - script error.

line: 107
character: 3
"object doesn't support this property or method."

NOTE:
on Netscape, no such problem. works as expected.
with IE, no error dialog,
but tabbing skips me to different objects on the page.