Developing Web Applications
Global.asa is used to store information used globally by the application; it does not generate content that is displayed to users. Global.asa must be stored in the starting point (normally the root directory) of the application. An application can have only one Global.asa file.
Global.asa files contain only the following: Application events, Session events, object declarations, and type library declarations. If you include text that is not enclosed by <SCRIPT> tags, or define an object that does not have session or application scope, the server returns an error. The server ignores tagged script that the application or session events do not use, as well as any HTML in the file.