(blank) fields should not have subtotals in pivot table

Hi,

I have made a pivot table (outline view) that works fine and given it
autoformat no 3 from autoformat options.

these are the fields:

ledger_ac
head_1
head_0
debit
credit

so it would come like this:

debit credit
head_0 subtotal subtotal
head_1 subtotal subtotal
ledger_ac value value

head_0 subtotal subtotal
head_1 subtotal subtotal
ledger_ac value value

now the question is that if head_1 is (blank) i can suppress the blank
by giving it a space, but i also wish to disable the subtotal for that
head_1, because if I hide head_1, then even the ledger_Ac
disappears.........

so basically what i need is that no subtotals a (blank) field.....or do
NOT DISPLAY the blank field all together but fields within that blank
fields should still be displayed........

Is this possible in the pivot table ?

Regards,
Shripal Dalal.