On the Internet in general and JavaScript in particular, there are many codes and tools to help your visitors copy text directly into the clipboard without through the browser or operating system. However, most restrict of these code are they only run on Internet Explorer, so you try to use this effect, it uses a Flash file to convert and perform the copy to the clipboard.

Let use this multiple select script if you want to create select boxes that relate to anothers, by onchange event. Choose a value in the first select options and the script will precess and display the available select values in the second box to match your selection automatically. Easy to use, with full comments in source code.

You can also see more for multiple select, dynamic dropdown,...

Create an auto-complete or auto-suggest text box in JavaScript, without use of prototype handlers and other advanced techniques. This script could be adapted for use in a number of different situations.

Maybe you also want to see our previous auto-complete scripts: Simple Auto-Complete and Auto-Complete Textfield.

Validate form elements of all kinds: select boxes, text fields (including spaces), radio buttons, force numbers in textfields, etc. Very easy to use. Can be used on all forms.

Sometimes you may need to make sure your visitors agree to specific terms before submitting their comments. This JavaScript will disable the input fields until they agree to your terms. Easily adaptable.

This form validation script will place a check in the checkbox next to a textbox in a form if the enty is valid. Includes basic form validation. Cool!

Limits the number of checkboxes that the user is able to check on your site. Ideal for situations when more than one selection is allowed up to a certain number overall. If they select too many, they are notified of the maximum allowed and their last entry becomes unchecked.

This JavaScript verifies that a string is numeric, otherwise it deletes the non-numeric character.

Customize Dropdown Menu is designed to display some choices, as: languages, countries, themes,... but it's differrent from original version in browsers. This tool combine CSS and JavaScript to create a dropdown you can add image to tilte, every choice.

Version 2: check if JavaScript is disabled, then add normal dropdown menu

Let's try dropdown below and feel differences.
Tested: IE 7, Opera 9, Firefox 2, Netscape 8.

This JavaScript allows one button to have two or more functions.