Column-oriented input

I need to capture some data in text fields but the data formatting requirements are very strict and very column oriented. In other words, if I have a varchar2(100) column and stuff must start at the 15th position and stuff like that.
How could a plain HTML text input field be "enhanced" to facilitate entry of such data?
Options
1. Show a hovering "ruler" when the input field gets focus, this ruler would contain column positions like 0123456789 over and over again. This hovering (div?) would have to match the height/width of the input field exactly and would need to be positionined directly above the input field.
2. Style the input field with a backgroud-image:url(...) using a screenshot of the ruler in (1) above. I tried this but the user-entered data gets "mixed up" with the background image and the result is all gibberish! Maybe the image transparency, opacity and color could be adjusted. Ideas welcome.
3. Show the character counter like the builtin "Textarea w/ character counter" item. The problem with this is that it always shows the the total number of characters entered in the widget so far. I would like it to track the cursor position in the field instead. So, if I enter 10 characters and use the <Left> arrow to go to the 6th character, I want to see "6 of 10 (max. 100)"
4. I would like to use the Tab key for navigation within this text field. Normally, the Tab key takes you to the next form input field (as defined by the tabindex). But, if I have a 100 character field, I woud like Tab to go to the 10th, 20th, etc position within that field (inserting spaces as necessary).
Comments welcome. Thanks.

Code wise it's actually pretty close to how the new Item Preview worksBecause it's collecting values per report row and using javascript to comibne them into something else.
Now how about this http://htmldb.oracle.com/pls/otn/f?p=24317:25 it runs onkeyup
Here's the new report query
select a.*,
'<input size="3" type="text" onkeyup="combine(this)" value="'||substr(ip_address,1,pos1-1)||'" />' ip1,
'<input size="3" type="text" onkeyup="combine(this)" value="'||substr(ip_address,pos1+1,pos2-pos1-1)||'" />' ip2,
'<input size="3" type="text" onkeyup="combine(this)" value="'||substr(ip_address,pos2+1,pos3-pos2-1)||'" />' ip3,
'<input size="3" type="text" onkeyup="combine(this)" value="'||substr(ip_address,pos3+1)||'" />' ip4
from (
select
"PK",
"PK" PK_DISPLAY,
instr(ip_address,'.',1,1) pos1,
instr(ip_address,'.',1,2) pos2,
instr(ip_address,'.',1,3) pos3,
"IP_ADDRESS"
from split_fields
) a
This goes in the page header
<script type="text/javascript">

</script>
Carl
Message was edited by:
Carl Backstrom

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