Open dashboard on Safari and refresh

dashboard.scpt

tell application "Safari"
    activate
    tell application "System Events"
        keystroke "f" using {control down, command down}
    end tell

    repeat
        try
            delay 60 -- 60 seconds
            set URL of document of window 1 to URL of document of window 1
        on error
            -- do nothing
        end try
    end repeat
end tell