code: function _fnCellFromCoords( x, y )
  	{
  		if ( _oDatatable )
  		{
  			if ( typeof _oDatatable.aoData[ _oDatatable.aiDisplay[ y ] ] != 'undefined' )
  			{
  				return _oDatatable.aoData[ _oDatatable.aiDisplay[ y ] ].nTr.getElementsByTagName('td')[x];
  			}
  			else
  			{
  				return null;
  			}
  		}
  		else
  		{
  			return $('tr:eq('+y+')>td:eq('+x+')', _nBody )[0];
  		}
  	}
docs: /* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
  Support functions
   /*
  Function: _fnCellFromCoords
  Purpose:  Calulate the target TD cell from x and y coordinates
  Returns:  node: - TD target
  Inputs:   int:x - x coordinate
  int:y - y coordinate