The calendar allows to change month or year only step by step. If the user wants to reach a distant year, it means a lot of clicks to be performed. Is it possible to improve this ?
The year should be a clickable area, and when clicked it displays a menu allow to switch 10 year. The same for the month, when clicked, it displays the whole list of months for a quick click.
There are many jquery plugins that work this way, for a faster and easier date select. Here are examples.
or the default Mozilla Firefox for date type input