This JavaScript creates a pop-up-window on the left side of your screen. The pop-up-window flaots to the center of the screen, waits a few seconds, and finally floats to the right and disappears. Great for banners and important messages!

Matt's DHTML ad script displays an 'inexcusable' box in the middle of the page, broadcasting ads of your choice inside. The box automatically disappears after x seconds, with its display frequency configurable (ie: show ad box only 1 of out 5 times the page is loaded). This is one method of serving ads that may just be effective, since it contains qualities of a TV/radio commercial.

This JavaScript will change scrollbar from right to left when vistors click button.

Scientific calculator for chemists with notebook is a fully functioning JavaScript calculator. This calculator code can be used as common scientific calculator code (sin, cos, log, power, root, memory), but it also includes a molecular weight calculator and the tables with various physical and chemical constants. The calculator contains a list with task history, storing all the recent inputs and results. Scientific calculator displays the numbers rounded to a user-specified number of decimal places.

This is a different script to create a calculator code with memorial function.

This JavaScript can be used to calculate some bitwise operators.

Vitaliy's Math Javascript Library - is the collection of mathematical routines not included in JavaScript built-in objects (Math, Number) . The tool on this page is used to demonstrate how these functions work. This is still a beta version of the library, since testing is not complete yet.

Computers read and store the decimal numbers we see everyday (1, 5, 10, 100, etc.) as binary numbers, a number of just 1's and 0's. All that you do is enter the decimal number and the script will output the binary equivalent! It is a binary converter!

JavaScript can help you figure the circumference of a circle when you enter the radius.

Use this practical script to easily convert between the 7 most popular length units- centimeters, meters, kilometers, miles, inches, feet and yards. Simply enter a number, and let the script display the desired equivalents. Cool.