This collection will help you to set, get, and delete cookies. It's a nice little collection that should prove to be invaluable.

Display the date and time of the users last visit. Easy to implement. (Reload the page to see it work.)

Type whatever you like in the boxes, click outside the box, reload the page, and try to type the details again. This JavaScript uses cookies, so if you have them disabled it will of course not work.

Calculate the percentage of increase/decrease between two units. A simple, effective script.

This compounding interest calculator can show your visitors how much they can save for retirement or other purpose. It also provides your users with the ability of viewing an amortization schedule showing what they will earn during each month. You can easily adjust the style section to make it match your site's color scheme.

Find out the circumference of a circle by entering its radius. Very simple!

Use this JavaScript to convert bytes, kilobytes, megabytes, and gigabytes. Quick and easy to use.

This JavaScript will factor and solve for both values of X, any quadratic equation that has real number solutions.

This JavaScript will call popups from a link. Each popup is sized individually. Can be used more than once on a page.

A mini-browser. You can type a URL in the form and script will load the requested page. The script works in both Netscape 4.0+ and IE 4.0+, but best in IE.