Whenever using a site with Javascript, be sure to let every single page load entirely before doing anything (unless you know what you're doing, of course).
The webpage of my bank (ok, I don't actually *own* the bank) is really slow today, so I tried making a transfer *before* the page had finished loading... There was no error message, or anything, but I decided to check on it... and nothing had happened for real, because the functions that should have done what I wanted hadn't been loaded yet... :-|
Good thing I'm a programmer... :-|
