The xml is not being refreshed

Question

hello
i am trying to build an online calendar in which the user can
save his massages.
the problem i have is that once the user saved the messages
the first time, the next times he logs in the messages are not
being refreshed. meaning that the user will always see his first
messages and it does not refresh.
the way it works is that after u press save, it creates an
xml file that is loaded the next times.
if you delete the cache than the correct info appears.
i tried to research it but havent really figured out a way to
solve it. maybe its something to do with http headers i dont
know...
the calendar is on :
http://www.omrihecht.com/calendar/calendar.html
any help will be appreciated.

Answer 1

the code i am using to load the xml is :
prevData.onLoad = function (success : Boolean)
if (success)
loadPreviousData ();
showErrorMessage ("loading data")
} else
showErrorMessage ("welcome "+loginName.text)
myIdentifier = Math.round (Math.random () * 10000);
prevData.load (fileToLoad + "?uniq" + myIdentifier);
and on explorer it works ok, on firefox it doesnt
if you will look at it, when it finds the file it has to
load, it displays "loading data", if it doesnt find it it displays
"welcome "+username..
if you will use the following username = 123 and
password=456789 than you will be able to see the difference between
the browsers..