CreateScript to update a field value before load

SUGGESTED

I've written a CreateScript that interrogates a value in a date field on the page to see if it is less than the current system date. If it is, the value of another field from the same page is updated in the database. This is working fine but I want to force a Refresh / Reload of the current page so the update that has just been performed is visible to the user. If I manually hit F5 in the browser the change is displayed. So I'm looking to programmatically mimic the behaviour of the F5 button.