When i am developing a web application, there i have to open a confirm alert box that ask for confirmation when user has change his some privileges, then i will be find out the facebook.alert.js for alert box like facebook.

You can also customize the appearance of the alert box some changes in style.css

fbalert

Javascript Code

Add below javascript code before head tag closed. In the below code i have defined the alert message like facebook notification message.

HTML Code

Style.css code

demo download.