uiTableEdit
- jquery plugin for making tables user editable
- simple, but you may be better of using one of the more generic editable plugins and applying it to a table

user clicks on a cell, edits the value, then presses enter or clicks on any cell to save the new value
usage

              var t = $('table')
              var options = {}
              $.uiTableEdit( t, options ) // returns t

download
http://plugins.jquery.com/project/uiTableEdit

source code
http://github.com/gregwebs/jquery-uitableedit

documentation
http://projects.gregweber.info/uitableedit.html

author and license
copyright Greg Weber dual licensed under GPL and MIT
overview

options :

    * off : turns off table editing
    * find : defaults to tbody > tr > td
    * mousedown : callback on mouseDown event
      called in context of the table cell
      if mousedown returns false, cell will not become editable
    * dataVerify : callback after cell has been changed
      called in context of the cell,
      if dataVerify returns false, cell will stay in editable state
      if dataVerify returns a value, that value will replace the cell's value
      arguments are cell's value, original text, event
    * editDone : invoked on completion
      arguments are cell's new value, original text