Make the table center in the htmleditor

[wanghaihan]

hi!
When I use the htmleditor,I found a problem.
If I write a table in the source edit like this

<table style="margin: auto;"><tbody><tr><td>abc</td></tr></tbody></table>

I want to make the table center by style="margin: auto;".The problem is that after I close the source edit and the table be center,but if I click one cell in the table, the eight boxes for changing the size of the table are not in the center with the table.These are still in the left of the Edit box.
How to solve the bug?
By the way.I found that the button "Align Center" is only be effect for text.I can't make the table be center by the button but source edit.
Could anyone help me?
Thanks a lot!!

[wanghaihan]

???

[wanghaihan]

who could help me???