jQuery plugin to alert users of unsaved changes

 Are-you-sure (jquery.are-you-sure.js) is simple light-weight "dirty form"
 JQuery Plugin for modern browsers. It helps prevent users from losing unsaved
 changes by promoting the user to save/submit.
 .
 Features:
   - Simple usage
   - Pure javascript implementation
   - Leverages onBeforeUnload to detect all page/browser exit events
   - Works on forms of any size
   - State management--mark forms clean if original values are restored
   - Graceful degradation on legacy browsers