Returning Multiple Values From A PopUp Window?

We use .mac's to create some of our Web content where we also use some javascripts. We have numerous prompts where we have a button for the user to click on that brings up a new prompt window where they type in a search name like, TIE, to search for all ties available to select from.

After typing the search name, the same window displays a list of selections to choose from. When they select the desired item and click the continue button, the window closes and we return the item number to the calling program.

What I would like to do is bring back more than one variable. For example, instead of just, 1234 in Fld1, I would like to return, 1234 into Fld1 and B into Fld2, where Fld2 will not be displayed but needed elsewhere.

For this made up example, these codes could stand for... 1234=Tie and B=Blue. We may use 1234 for all ties and have a second field to further define it.

The code I have always used in the past will just bring back the 1234, I am asking how to return the B also?

Here is some of the code I currently use:

This displays the button they click to bring up the pop-up search window...

<tr>
<th Align="Left" BgColor="LightSteelBlue">Item#</th>
<td colspan="3">
<input type="text" size="5" MaxLength="5" name="choiceItem" value="$(choiceItem)">
<input type=button onClick="window.open('/member/Item_Lookup_Both.mac

[Code]....