Features:

• Pops up lists of years, months etc down to 5 minute resolution. One click populates the input field
• Checks that the fields are input controls and behaves differently for type=date, time, datetime, datetime-local
• Uses the min and max attributes on the input field
• Allows styling with css
• Tested in FF3. Seems at first glance to also work in FF3.5, IE8
• About 3.3KiB minified and gzipped

• Support different date formats, not just HTML5 global date and time strings
• Popup whatever is currently in the field
• Add documentation
• Please use the issue tracker for bugs, or suggestions for features and I will consider adding them to this list

• Include the css:

<link href="./jquery.dtpicker.css" rel="stylesheet" type="text/css">

• Include the library (after jQuery and optionally the jQuery metadata plugin):

<script type="text/javascript" src="./jquery.dtpicker.js"></script>

• Call 'dtpicker' on the input fields:

$("input").dtpicker();