Help me define a context menu with some of elements in HTML to each table cell ?

Help me define a context menu with some of elements in HTML to each table cell ?

The first purpose:
         I want to use jquery to get information of content of table' cell. With javascript that using "innerHTML" & with getElementById... may be access elements in document. But javascript long to write & no more effectively.
The second:
         using context menu to elements - with table.
Everybody experience in jquery help me. Thanks very much.