Test THEAD after TBODY. MS IE4.0 can take it.
In HTML4.0 standard, THEAD must be before TBODY.

cell 1-1	cell 1-2	cell 1-3	cell 1-4
cell H-1	cell H-2	cell H-3	cell H-4
cell 2-1	cell 2-2	cell 2-3	cell 2-4

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