[flexcoders] Combobox as itemrendere in Datagird

[Parkash]

Hello friends ..
I am using Flex 2.0.1, i have one data grid with two coloumns. in the first 
coloumn i have used combobox as item but it is not working correctly as soon as 
visible area of grid fills up the combobox behaves abnormally can u tell me if 
any one of had faced this problem .. or what cud be the problem