to align the table in center to the pdf page...i am using the following ...

<table align='center'>
...content of the table ....
</table>

and 

<center>
<table>
...content of the table ....
</table>
</center>

but unexpectedly, in the generated pdf the alignment doesn't work...give your valuable suggestions...

How about applying style="margin-left: auto; margin-right: auto" on the table?

ya it works...thank you for ur valuable reply...