I followed your explanation on https://dev.twitter.com/docs/twitter-for-websites , and copied the generated code into an information box of an osCommerce webshop. However I entered 200 px for the width, the actual width is still more than 240px. How can we change this please?

Please have a look at www.spelmaterialen.nl in the column at the right.

With kind regards,

Edze de Boer