I am checking the following website and tested from various countries and like to know how they are changing the currencies automatically according to the country you visit the website. Please through some light - http://bit.ly/g1kmL2
Using server scripting language you can read in the default language of the visitor's web browser. Then you can show the appropriate currency based on their native language. Many times multiple languages can appear for a visitor browser -- in that case, select the first one...