Dynamic Content JSP + Tree View Format

I have a JSP page from where i collect all the data and display it in a table format (8 columns).
I have restricted the display on a single page to 4000 rows, of which 500 rows need to be the Main Folder Like and on click of each one get 8 more rows open or close.
1st View
+1
+2
+500
2nd View
-1
1
2
3
4
5
6
7
8
+2
-500
1
2
3
4
5
6
7
8
The values from 1 thru 500 and a, b, c, d.. h are all got from the database (mySQL). What i'm doing currently is
1
2
3
4
5
6
7
8
1
2
3
4
5
6
7
8
Also i would like to mention that the page is refreshed at certain intervals that have been set, so it should remember the previous view. Can some one help!!

Tnx for the quick replies, but i forgot to mention what is actually displayed, i got the kind of display as mentioned above, but the exact requirement is like...
What will be there
+ 1 1 1 1 1 1
+ 2 2 2 2 2 2
�. �. �. �. �. �.
�. �. �. �. �. �.
+ 500 500 500 500 500 500
On Click of the Plus Sign
- 1 1 1 1 1 1
1a 1a 1a 1a 1a 1a
1b 1b 1b 1b 1b 1b
1c 1c 1c 1c 1c 1c
1d 1d 1d 1d 1d 1d
1e 1e 1e 1e 1e 1e
1f 1f 1f 1f 1f 1f
1g 1g 1g 1g 1g 1g
+ 2 2 2 2 2 2
�. �. �. �. �. �.
�. �. �. �. �. �.
+ 500 500 500 500 500 500
.i.e. the entire set of row with abt 6-8 columns need to be displayed. Now any suggestions??

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