Dynamically updating the contents of a Table from another Frame.

I have a frameset containing two frames.
"Left" contains a series of images in a table (one image per cell).
"Right" contains one larger image in one cell of a table and associated text in another cell.
I am able to use "onClick" for each of the images in "Left" to update the source image (and Alt) of the first cell in "Right" (using "parent.right.document.MainPic") , but also need to update the text in the second cell.
I am having trouble finding out howI can reference the appropriate cell in the "Right" frame from "Left".
WaratahAsked:
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stanscott2Commented:
Let's assume that there's only one table in the right frame:

var tbl = parent.right.document.getElementsByTagName("table")[0];
tbl.rows(0).cells(1).innerText = "My new text";
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WaratahAuthor Commented:
Previewing the frameset generates an error message relating to "tbl"  - Null or does not exist.
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ahoffmannCommented:
you better use a named tag in your cells, for example in your second cell:

  <td><div id="mytext">text</div></td>

then you can access it like:

  parent.right.document.getElementById('mytext').innerHTML='new text';
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