Thank you for your reply,
I have facing another issue as below when use customized Telerik.Web.UI.Editor.CommandList event for alignment as above(posted on 29 july).
When i select content(text) from multiple <td> and try to set alignment then all text are merged and append in first <td> with <p> tag.
-> Steps to reproduce the issue.
1 - Add table in Design mode with multiple <tr>,<td>
2 - Add content(text) in all <td>
3- Select all content(text) from <td>
4- Try to align text center,right,left
Result : All text are merged and append in first <td> with <p> tag.
refer link : http://screencast.com/t/DTVrLcp1TL5F