Question

Looking for name of jQuery used on Extended Form elements: multiselect for admin template below:
http://www.eakroko.de/neat/forms.html

Answer 1

Just check the source of that page and try and figure out which plugin was used. What i did:

1. Scrolled to the element of interest, in this case the multiselect field.
2. Right click on element, then selected inspect element option.
3. Figured out the class of that element : <div id="select5_chzn" class="chzn-container chzn-container-multi chzn-container-active" style="width: 384px;">
4. Guessed that it was chosen.jquery.min.js, because it was the closest match to the chzn class.

In the future repeat the above steps to figure out such things. Inspect element option or its equivalents are available in most browsers, if not natively, then atleast with web developer browser plugins.