Just a demo to show that you can put an INPUT tag anyplace on the page and add the ONCLICK event handler to open the calendar and the included code files do all the rest!

  Note that if you click on the Month or Year in any popup calendar, a drop-down <select> appears so that you can quickly change to any month or year.

 

 

  An all-defaults calendar here:

 

 

  And then a FORMAT="DMMMY" calendar somewhere in this neighborhood:

  And a format="YMD" calendar:

 

  And lastly a FORMAT="DMY" calendar that has Monday as first day of week at left edge: