Luis,

It is possible to prevent the back button from becoming active in
certain cases.  The way to do this is use the javascript function:

location.replace(theURL)

Where theURL is the new page you want to navigate to.  For example, if
a user bookmarks your application and loads it they will initially
have the back button dimmed out.  If you have the following HTML link
which takes them to the apple homepage the back button will still
remain dimmed out.

<a href="http://www.apple.com";
onclick="location.replace(this.href);return false;">Apple.com</a>

What you are doing is replacing the current page stored in the history
object with the new page you are navigating to.  To see this code in
action check out the post from my coworker about beta testers for our
MLB iPhone application.

- John Kramlich

On Jul 9, 4:28 am, Luis Oliveira <[EMAIL PROTECTED]> wrote:
> Hi all,
>
> I would like ti know if there is any way to prevent the user to
> disable back button on an iPhone webapp or force Safari iPhone to do a
> request to the server whenever the user click on back button (instead
> of using the browser cache).
>
> Thanks
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