[Theme: Customizr] Need help using a JQuery plugin to make a contact form

I am trying to use this form: http://steadicat.github.io/labels/#html
On my site on this page: http://doehrmann.com/wordpress/start-a-project/

I installed the JQuery UI Widgets plugin to put in the javascript code. But I am not sure where to go from there. Can someone explain this to me?