How do I round off

[cmrhema]

Hi,
I want to round of the salary amount to the nearest 0.05. eg. if my salary is 1000.23, it should be rounded to 1000.25 and if the salary is 1000.26 it should be rounded off to 1000.30.
The Math.round function is not helpful in the above sceneario.
Suggestions pls

Regards
cmrhema

[tlhintoq]

if pennies greater than zero and less than 5 then pennies equal 5
if pennies greater than 5 then coins = coins plus (10-pennies)