How to make applescript open more than one program at once?

Question

Hi! I made the code below to use together with another 2 codes. One that mounts a samba share and another that runs rsync with specific parameters. The script below runs after rsync complete its task.
The 3 codes help me to test my HTML/CSS/PHP/Javascript code changes.
This code works but I have to repeat it to each browser/app I want and a 10 lines script becomes 40 lines (Google
Chrome, Firefox, Opera and Safari). Is there a more elegant way to do that? I've tried to use an array/list but didn't work.
if application "Safari" is running then
    tell application "Safari"
        activate
    end tell
    tell application "System Events"
        tell process "Safari"
            keystroke "r" using {command down}
        end tell
    end tell
end if

Answer 1

Nathan Greenstein already answered in AskDifferent: http://apple.stackexchange.com/questions/54595/applescript-array-of-applications /54598#54598
Quoting him:
set browsers to {"Google Chrome", "Firefox", "Opera", "Safari"}
repeat with browser in browsers
    if application browser is running then
        tell application browser
            activate
        end tell
        tell application "System Events"
            tell process browser
                keystroke "r" using {command down}
            end tell
        end tell
    end if
end repeat