applescript to switch tabs in google chrome

im trying to create an apple script to open google chrome,open 5 tabs and goto different urls,

and then alternate the tabs.

This is what i kinda have so far im very bad at applescript.

on is_running(appName)

tell application "System Events" to (name of processes) contains appName

end is_running

set chromeRunning to is_running("Google Chrome")

if chromeRunning then

tell application "Google Chrome"

set i to 0

set j to 0

repeat with w in (windows)

set j to j + 1

repeat with t in (tabs of w)

set i to i + 1

if title of t contains "Gmail" then

set (active tab index of windowj) to i

return

end if

end repeat

end repeat

tell application "Google Chrome"

activate

open location "http://hotmail.com/"

end tell

delay 10

tell application "Google Chrome"

activate

open location "http://cnn.com/"

end tell

tell application "Google Chrome"

activate

open location "http://netflix.com/"

end tell

tell application "Google Chrome"

activate

open location "http://slashdot.com/"

end tell

tell application "Google Chrome"

activate

open location "http://hackaday.com/"

end tell