iCheck
Highly customizable checkboxes and radio buttons
...By default, iCheck doesn't provide any CSS styles for wrapper divs (if you don't use skins). HTML5 allows specifying indeterminate ("partially" checked) state for checkboxes. iCheck supports this for both checkboxes and radio buttons. You can make an input indeterminate through HTML using additional attributes (supported by iCheck). Both do the same job, but indeterminate="true" may not work in some browsers (like IE7). iCheck provides plenty callbacks, which may be used to handle changes.