Is there a way to add a button to a record that will cause a change to be made to the record when clicked?

There is an alternative, since you passed URL for Dummies with flying colors and are ready for Advanced URL formulas for Dummies.

Try this one

Do your URLONE formula except if you are just doing one thing, like editing one record, then let's just call it URL as the formula variable.

so you have var text URL = ........:

So it would look like this:

var text URL = URLRoot() & "db/" & "?act=API_EditRecord&_fid_80=1&rid=" & [Record ID#];

"javascript:" &
"$.get('" &
$url &
"',function(){" &
"$.jGrowl('This Item has been put on PO CANCEL snooze', {life: 5000, theme: 'jGrowl-green'});" &
"});" &
"void(0);"

This will put up a fade away pop up and not refresh the report.  The fade will last for 5,000 miliseconds (5 seconds), and the box will have the words in those single quotes