Scriptomizers - JavaScript Alert Message
A code generator which creates customized cut-and-paste JavaScript alert messages. Options include the message's text, and how it should be triggered.

Automatic Bookmark Script
Using this, the webpage could be automatically added to your favourites folder.

Javascript Dropdown Informer. You can create dropdown menus using this online utility.

Help popup windows You can create popupwindows using this online utility.
Here's a quick and easy way to add MS Windows-style popup help boxes to your Web site. Many customization options are available.

Javascript Alert Box
The JavaScript confirm alert box differs from a regular alert box in that it provides two choices for the user, OK and Cancel. Typically, you’ll see confirmation boxes utilized on links where the destination is outside the domain of the page you’re currently on or to alert you of potentially objectionable material. The following example will display a confirmation alert box when either a link or form button is clicked. Once either OK or Cancel are selected an alert box will follow to display which was chosen

CodeThatCalendar
CodeThatCalendar enables you easily add the date/time picker to your form or page. Popup and inline versions of calendar are supported. CSS and visual effects support. On-line builder, forum and complete documentation.

Date time Picker
This great script lets your visitors easily input a date/time into a form field, by selecting it from a popup window. Supports output dates in various formats such as: dd/MM/yyyy, dd/MMM/yyyy, MM/dd/yyyy etc.

Popup Calendar
PopUp Calendar with availability option. You can insert dates in the data.js file, those dates will become coloured and not selectable. Usefull for a rental system, in this way the already rented days will not be selected again. And that means a lot less mailing for a available date. Based on the PopUp Calendar v2.1 script by PCI.

CoolJsMenu
COOLjsMenu is an advanced cross-browser JavaScript menu that provides with some unique features that are not to be found elsewhere. Easily adjustable and configurable from the control file it requires no programming knowledge from the user and can be integrated into the site in minutes. Almost every aspect of the menus you can build with this SDK can be modified and tuned. On-line menu builder further simplifies the process. Documentation and first class support from the vendor also provided. Besides free version there is also COOLjsMenu PRO edition with even more features.

ButtonBar
ButtonsBar (Toolbar) Control is JavaScirpt Class to use in your web applications. Just create your own 16x16 pixel image, give your button a name, attach an onClick function, and the rest gets done for you. Features: + Built-in 3d effect, only one icon is needed instead of 3. + Attach onClick event. + Functions to draw buttons bar (Toolbar) panel, buttons separators and more api functions...