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Converts month to integer and vice versa. Retrieves the number of days in a month.
The months are in English, Spanish, French, Italian and Portuguese.
Example of use of the extension and MonthConversion.xif is included

Client action to get last day of month.

The jQuery UI Month Picker Plugin is designed to allow user input for only a month and year when only that input is required.

Converts month to integer and vice versa. Retrieves the number of days in a month.
The months are in English, Spanish, French, Italian and Portuguese.
This is the MonthConversion.xif