SharePoint Custom Field - jQuery Script in a List Form

I have just released on CodePlex the installable WSP solution files and the source code for this custom SharePoint field that enables jQuery to be added to list forms. It comes with two WSP files, one that deploys jQuery and one that does not (for farms that already have jQuery installed somewhere)

Useful for making minor rendering changes to controls and text in the new item, edit item or display item forms in a SharePoint list. The field has a custom editor which accepts the script to render on selected forms. Here's a screenshot of the field editor

As an example of its usage, I needed to enlarge the select lists in a multi-value lookup field in a particular list. To achieve that, I added an instance of this new type of field to the list, and configured the field with the following JavaScript:

var $multiselectLookup = $("td>button:contains('Add >')", $("table.ms-long")).parent('td');

$multiselectLookup

.siblings(':first')

.children('div')

.css('width','250px')

.children('select')

.css('width','300px');

$multiselectLookup

.siblings(':last')

.children('div')

.css('width','250px')

.children('select')

.css('width','300px');