This page is also available in Greek (Without images because I don't have a Greek version of Internet Explorer in this computer).
Enabling javascript in Internet Explorer
To enable javascript in Internet Explorer go to the "Tools" menu and click "Internet Options".
Then, click the tab named "security".
Then, click on "Restricted sites" and click the "Sites" button.
Then, make sure http://www.pokemonlake.com/ is not there. If it is, Click it, and click remove. If it isn't click close and follow the rest of the instructions in this page.
In the "Security" tab again, click on "trusted sites" and click the "Sites" button.
Disable the option that says "Require Server verification (https:) for all sites in this zone" by clicking the check box, and then type "http://www.pokemonlake.com/" in the text field under "Add this website in the zone:" and click "add".
Finally, click "Close" and then "OK". This should allow javascript to work.
Enabling javascript in Mozilla Firefox
Enabling javascript in Mozilla Firefox is a lot easier than enabling it in Internet Explorer. If you use Windows, go to the "Tools" menu and click "Preferences". If you use Linux, go to the "Edit" menu and click "Preferences". Go to the "Content" tab and click the "enable javascript" checkbox to make sure javascript is enabled. Then, Click "OK". That should allow javascript to work.