Formula URL or Formula Text Button that will perform an action, without the need to navigate away from the current dashboard/report/record?

This format will work on a record or a report.

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);"

The 5000 means it will display the pop up for 5 seconds before it fades away on its own.

I have never tried this on a dashboard in part because the button needs to know which record to act on.