Search and Replace values in the text field before values are stored to DB

Hi,
In my application there is a question - text area and answer - text field. Problem is, some answers are stored with the single quotes to the DB and I have a problem while retrieving it from the DB. I need to replace the 1 single quotes with 2 single quotes. The values are stored to the DB when the submit button is clicked.
So I am using the following javascript code:
italics
<script type="text/javascript">
function test()
var str="&P2_S1.";
document.write(escape(str));
</script>
italics
I need to call this javascript function, when the submit button is clicked but BEFORE the values are stored to the DB. How can i get this done?
Please let me know.

Hi,
Thanks for the reply.
Yeah I planned to drop the Javascript idea.
Now, I am using the PL/SQL code. This is what I am planning to do.
When the user enters any word like this, Test's, this single quote should be replaced by some special character, #@@#, - what is the PL/SQL code for this?
Right now my PL/SQL code is:
begin
update test set S1=:P2_S1 where name=:APP_USER;
end;
so the replacing part should come somewhere before the update statement.... how can I do it?
from the DB when the values are retrieved, I use the following code:
select REPLACE(s1,'''','') from test where NAME=:APP_USER; // this works fine.
Please help me with the replace of the single quote before the update process...

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regexp.png ‏5 KB

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