ScriptingWeb

Self-imposed requirements:
• The logic to manage the checkout form must be generic, i.e. totally independent from the type and number of items in the catalog. Therefore the form must be built dynamically.
• Rather than using document.write() to build the form, we build it using the DOM: the elements are build via a library (gen_dom.js) based on the Mochikit library (found in D.Flanagan book).

Using the above features, the change of quantities of items at checkout are handled without reloading the form; rather the dynamic part of the form is rebuilt in place.