What this script does is adds an element to the body when you roll over a certain object. That element's appearance is predefined with css (positioned absolute and styled) so all we need to do is fill the element with content, calculate mouse position and make it move accordingly. When cursor is moved over he object, element moves with it and when cursor roll out, the element is deleted.

Password Strength Checker (http://www.passwordmeter.com/) is an application that is designed to assess the strength of password strings. The instantaneous visual feedback provides the user a means to improve the strength of their passwords, with a hard focus on breaking the typical bad habits of faulty password formulation. Since no official weighting system exists, Password Strength Checker has created its own formulas to assess the overall strength of a given password.

YensDesign has created an amazing music player coded in xHTML and jQuery that made use of mouse gestures and hotkeys. You can Click & Drag with mouse to interact with interface’s music player or use directional keys & spacebar instead of mouse.

jQuery UI provides abstractions for low-level interaction and high-level, themeable widgets, built on top of the jQuery JavaScript Library, that you can use to build highly interactive web applications.

A simple virtual jQuery keyboard and provide your users with the option of using a virtual keyboard to key in their passwords and prevent keyloggers and other malicious software to track and record their passwords.