(1) Colspanning TD has fixed width equal to table width

width=340 (same as table)
Search for: | foo bar baz foo bar baz foo bar baz

(2) Colspanning TD has auto width

no width attribute
Search for: | foo bar baz foo bar baz foo bar baz

(3) Colspanning TD has width=100px

width=100px
Search for: | foo bar baz foo bar baz foo bar baz

(4) Colspanning TD has width=200px

width=200px
Search for: | foo bar baz foo bar baz foo bar baz

(5) Colspanning TD has width=100%

width=100%
Search for: | foo bar baz foo bar baz foo bar baz