header not alignment with body after using ajax

xuyenlt

Dear all,

i have a table, the first not align between header and body then i add css cellpadding:0; cellspacing:0; border:0px it's okie.
but when i submit using ajax to replace table. my table not align. please give me a way to resolve problem.
that is my table after ajax replace
https://drive.google.com/file/d/0B6jLQ5tJwKyHUW9KZjMyRms2YTg/view?usp=sharing