Changing the appearance of checkboxes  

With the use of CSS you can control hoe forms on your website look, however certain items like checkboxes, radio buttons and selects cannot be altered, they are rendered by the visitors operating system. There is no way to get around it. The key to changing their appearance is by not using checkboxes at all, use an image instead, store the values in a hidden field and glue it together with a few lines of JavaScript.

Price: Free

   DynaTable  

DynaTable is an API written in JavaScript that enables the implementation of dynamically repeating dataset interfaces within modern browsers. The API consists of a number of client-side classes that can be instantiated with specific visual and functional parameters to deploy interactive data entry forms to the web, without requiring special plugins to be downloaded by the enduser.

Price: Free (GPL)

   JavaScript Form Validation  

This is a simple form validation script that checks for empty fields. This script creates required fields and makes sure that the fields are not empty when the user submits the form. If the required fields are empty, the form does not submit and the focus is set to that text field.

Price: Free

   Block multiple form submission  

This useful script prevents a form from being inadvertantly submitted more than once, which often occurs if the user clicks on the "submit" button multiple times before the process is complete. The result is partial or multiple submissions. With this script, the submit button is disabled once it's been pressed the first time.

Price: Free

   Filtering Large Select Lists  

If you have a very large HTML SELECT list, finding the correct item can be like looking for a needle in a haystack. For example, if you have a list of a couple hundred names, finding a single one can be difficult. This article describes a JavaScript technique for filtering the items in a select list so that only the matching items are shown.

Price: Free (GPL)

   Hierarchical SELECT Menu  

With the Hierarchical SELECT Menu, you can define Sub-Menus on many levels, and not still have a workable control that functions as part of an HTML form.

Price: Free

   Form2PopUp script  

This useful script allows you to target a form's submission to a new window, so the original page does not change once the "submit" button is pressed. Instead, a customizable pop up window is launched containing the destination page.

Price: Free

   Clear default form value script  

Use this script to automatically clear the default value of any form's input field when the mouse sets focus on it.

Price: Free

   Disable Enter key in form script  

Is the user pressing the "Enter" key in the middle of your form causing inadvertent and incomplete form submissions? This script disable the Enter key when pressed inside chosen fields of your choice.

Price: Free

   North American Chooser  

This is the North American version of Ken's Country Chooser, and would be more appropriate to site forms that only deal with North American customers. It displays two select boxes, one for the country (Canada and United States), and one for the state/provinces.

Price: Free