Div.show Does Not Work When Running, But Does Work When Stepping Through Code

I have a div that should appear when saving. The markup for this is similar to this:

Message

Later in my code I have

Solution 1:

The UI is locked up because the ajax async property is set to false. Set it to true and try it. The SaveData method will finish, update the UI to show the "saving data..." text and then update again when the ajax call returns.