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In this example, the user is allowed to enter manually the ID and period of the report, for maximum flexibility.
Listed in the Server-side includes section, there is an An array of SSI variables that can be used in your HTML code to automatically insert a drop-down list of valid report periods. The variables are described in the Server-side includes section.
Further, there may be times when a drop-down list is needed in your HTML page that holds a list of all the extension groups that have been set up. Clearly, a static HTML page would not suffice here because the list of extension groups may change. In this case, you must use the server-side variable named #SSI_EXTNGROUP to do this for you.
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