On github, I found a good jQuery plugin named tokenInput,it can search and show results in drop down list when you are typing, and can send all the selected items to backend as the form submitted.
Here is the homepage :http://loopj.com/jquery-tokeninput
The second plugin is used to do the pagination work., you can customize it with options , and you can add awesome animations just with a little words. You can use it and config it easily.It’s also a jQuery plugin.
Here is the homepage: http://luis-almeida.github.com/jPages/
Next plugin is also an jQuery plugin, it’s name is lazyload. It can speed up page loading by delaying images load process, you can just load images with is in the vision and load other images when needed. You can determine the time images being loaded by setting a parameter, you can even trigger the loading progress by self defined events.
Here is the homepage: http://www.appelsiini.net/projects/lazyload
Here is the homepage:http://www.jstorage.info/