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

I modified and used in my report but pressing the button shows no reaction.
my fid is 10 and it's a checkbox. I simply want to be able to press the button in a report to mark the checkbox checked because I don't want to have to use "grid edit" which would render another button I have (to open at the URL of the record in a new window) useless.

var text Update= URLRoot() & "db/" & Dbid() & "?act=API_EditRecord&rid=" & ToText([Record ID#]) & "&_fid_10=1";
var text URL = "javascript:" &"$.get('" & $Update & "',function(){" &"$.jGrowl(�Item Marked Completed�, {life: 5000, theme: 'jGrowl-green'});" &"});" &
"void(0);";
"<a class='Vibrant Danger' href=\"" & $URL &"\"" & ">Mark Completed" & "</a>"