1998-12-02  Miguel de Icaza  <miguel@nuclecu.unam.mx>

	* src/gnumeric-sheet.c (gnumeric_sheet_set_top_row,
	gnumeric_sheet_set_top_col): New functions to set the sheet top
	column and row respectively.

	(gnumeric_sheet_bar_set_top_row, gnumeric_sheet_bar_set_top_col):
	Renamed from their old names to reflect their actual action.

	* src/item-cursor.c (item_cursor_autofill_event): Do not pass
	negative numbers to item_grid_find_col and item_grid_find_row.

	* src/item-grid.c (item_grid_find_row, item_grid_find_col): Check
	for possitive numbers. I think the right fix is to accept negative
	numbers and find the column even if the number is negative instead
	of this ugly restriction.