Lost session var using window.location

[Anon]

Hi!

I've got a series of forms, the field values of which are stored as session variables. In some pages, users will select objects in successive operations. Since I'd like them to be able to go back to a previous page without going through all of these successive steps, I've provided a button:

<input type="button" value="Back"
onClick = "window.location = '../../previous_page.php';">

In Netscape, this works fine. The 'previous_page' shows all the session-stored field values. In explorer, however, the shown form is now empty, although the session variables are still written out in the session file. Refreshing the page helps, but the users shouldn't have to do that. Also, using a link works fine:

<a href='../../previous_page.php'>Back</a>

Does anyone know why session variables aren't visible, using the button?
Thanks,

Maria

[[deleted]]

The only thing I can think of right now is caching.
I guess IE gives you a cached version of the empty form.

Remember that IE is only fast because it caches just about everything, even if you tell it not to.

[Anon]

Hi again,

You mean it does that even if I set session.cache_limiter to nocache? That MSIE is really getting on my poor, newbie nerves!

Maria

[[deleted]]

Indeed, IE has it's own way of caching, and it basically just does what it wants.
You'll have to play around with various settings to see which one works.. 🙁