Get cell values when it is clicked

Hello..please help with my problem since Im new in using
HTML and javascript.

I have this table that has rows and columns.
Hello..please help me with my problem since Im new in using
HTML and javascript.

I have this table that has rows and columns.
When i click the value of the cell, it will return
the values of the cells of the same row.

Example

<TABLE>
 <TR>
  <TD>xyz</TD>
  <TD>xxx</TD>
 </TR>
 <TR>
  <TD>abc</TD>
  <TD>aaa</TD>
 </TR>
</TABLE>

So if I click cell with xyz value, it should return xyz and xxx values.

Im thinking of using onClick in TD tag then get the values as arguments
for the function.

<TD onClick="GetVal(this);">xyz</TD>

is this possible?

how can i manipulate the values sent to the function?
please help me..