The simplest calendar in pure JS (no frameworks, CSS, etc.)

Question

JavaScript

Please advise a calendar widget script that satisfies ALL of the following requirements:
- written in pure JS, without frameworks like jQuery, Prototype, etc. - just a piece of JS code
- does not use any external CSS: the entire design is defined inside this JS
- does not require hands to form any kind of HTML in advance - everything is formed only inside JS
- well, it is desirable - small size, nice look, of course.

Standalone is VERY important: the calendar will be inserted via userscripts/Chrome extension into places where there are no frameworks (and you don’t want to drag it because of such a trifle), and CSS is very hostile to any interference (namely, right inside GMail).

Those. it should be a pure piece of JS. Called - the calendar appeared.

Answer 1

Plain and simple
JS Calendar
JS Event Calendar
Picker
CodeThatCalendar

Answer 2

script = document.createElement("script");
script.src = 'https://ajax.googleapis.com/ajax/libs/jquery/1.6.4/jquery.min.js';
document.getElementsByTagName('head')[0].appendChild(script);
why is it so hard to google?