English users, thanks for your help. You can click on these site:

http://dittaturaoffline.netsons.org/reloader.html

And then click on Start. The page to put offline will be automatic updated every 5 seconds. Open it in more pages or tabs to maximize our effort.
For a way less prone to blocks on server side, download this firefox extension https://addons.mozilla.org/en-US/firefox/addon/115, install it and then open http://www.gerdab.ir/fa/pages/?cid=407 (the site to put offline). You should now have an “Update Every” item in the right click menu. Activate that with a very little timeout (5 seconds or less)  and then leave the page open. (Tip: open a Firefox window with only tab opened on http://www.gerdab.ir/fa/pages/?cid=407 , than use the “Activate on all tabs” to activate the automatic update on all the tabs of the window.

For Linux and MacOSX users, please type this command in as many terminal as you can:

while true; do curl -A 'Mozilla 4.0' --limit-rate 1 http://www.gerdab.ir/fa/pages/?cid=407; done > /dev/null;

and then leave the terminals open. Thank you very much.