Two jQuery versions on the same page

Question

Is it possible to have 2 different jQuery versions in the same document, and have them to not collide with each other?

For example if I create a bookmarklet and want

Answer 1

jQuery comes with a way to avoid collisions. After you load the first version, you can assign it to a different variable.

var $j = jQuery.noConflict();

And then load your second jQuery version. The first one you load can be accessed with $j(...) while the second one can be accessed with $(...).

Alternatively, somebody made a little helper in an attempt to make it easier to switch between different versions.