TOPIC: Javascript to change submit button to "please wait"

I had to add this manually to my site. Sometimes DT takes a while (say 10 seconds) on my Amazon-based site to process a registration. Some users don't understand that the site is processing and re-hit the submit button. It would be nice to have some javascript that on clicking of the submit button:

1. Changes the text of the submit button to "Processing. Please wait."
2. Disables the submit button (preventing double clicks while making it appear gray).

I have a sample of this implemented and am happy to contribute the code. I found that without this ... some of my users were complaining that the site wasn't working when in fact they were double and triple clicking the submit button!

In the current version, the Submit button already grays out after clicking it to prevent the double-clicking. We'll look at a good processing notification option. Thanks.