Using HTML and ASP Compound Languages
The HTML Language also supports embedded scripts. Server and client-side scripting blocks will appear using the syntax formatting appropriate for whatever scripting language is used. Elements defined in the scripts are also displayed in the symbol window, and are saved in the symbol database.
You can specify the default scripting language to use in HTML or ASP in the Options > Preferences: Languages dialog box. Click on the Special button and select the default language where it says "Default script language".