50 Part III (Adelphia web hosting) . Document Objects Reference Listing
50 Part III . Document Objects Reference Listing 13-4: Multiple Script Versions
If you use this technique, you must define an event handler for the lowest common version to catch the oldest browsers. For example, failure to include a version for JavaScript 1.0 in Listing 13-4 results in a script error for users of NN2 and IE3. If you don t want an older browser to execute a function (because the browser doesn t support the functionality required for the action), include a dummy function (a function definition with no nested script statements) in the lower-version