SQL query to display like this

I have a table with records like this:

Date EmpID ADCode ADAmount
-------------------------------------------------
01-Jul-07 101 GPF 150
01-Jul-07 102 GPF.ADV 100
01-Jul-07 103 GPF 200
01-jul-07 104 GPF 300

I want to show results like this using a single SQL query:

Date EmpID GPF GPF.ADV
-------------------------------------------------
01-Jul-07 101 150 0
01-Jul-07 102 0 100
01-Jul-07 103 200 0
01-Jul-07 104 300 0

I tried:

select PaySlipDate,EmpID,
case ADCode when 'GPF' then ADAmount else 0 end GPF,
case ADCode when 'GPF.ADV' then ADAmount else 0 end 'GPF.ADV'
from EmpSalaryRecord

It is showing like this:

Date EmpID GPF GPF.ADV
-----------------------------------------
01-Jul-07 101 0 0
01-Jul-07 101 150 0
01-Jul-07 102 0 100
01-Jul-07 103 0 0
01-Jul-07 103 1000 0
01-Jul-07 103 0 1000

It is showing multiple records of each employee for each date. First a
record with GPF and GPF.ADV both zero and then records with values. I want a
single record for each date and employee.
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