Add multi-lingual support to Helioviewer.org

[Keith Hughitt]

For example,

A very simple implementation would be to create a "language" folder with different flat files: "en", "de", "zh-CN", "zh-TW", etc. Each of the files includes translations for each of the major UI components, the welcome message, etc. When a user visits the site we could then detect their location/language, we could then look for the associated language file. If none exists, the English version could be used as a fall-back.

[Keith Hughitt (keith-hughitt)]

Detecting the user's language:

// Client-side (may not work in all browsers?)
var lang = (navigator.language) ? navigator.language : navigator.userLanguage;

// Server-side
$lang = $_SERVER['HTTP_ACCEPT_LANGUAGE'];