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Lesson 17. Extending Dreamweaver > Installing Extensions

Installing Extensions

Extensions are installed into Dreamweaver using the Extension Manager. In this exercise, you will install several extensions that have been provided for you on the CD-ROM that accompanies this book

Quit Dreamweaver. Find and open the Macromedia Extension Manager.

The Macromedia Extension Manager folder is usually installed in the same folder as the Macromedia Dreamweaver MX folder. Look in your Applications or Programs folders.


Double-click or open the extension file from the Finder (Macintosh) or Windows Explorer (Windows) to launch the Extension Manager automatically.

The Extension Manager enables you to install extensions, remove extensions, find out more information about an installed extension, and write a review of an installed extension. It also provides a convenient way to bring up the Dreamweaver Exchange Web site, which will help you find more extensions.


You can launch the Extension Manager from within Dreamweaver by choosing Commands > Manage Extensions. You can install extensions while Dreamweaver is open, but you need to restart for the changes to take effect.

Choose File > Install Extension in the Extension Manager.


Windows users can also click Install New Extension.

The Install Extension (Macintosh) or Select Extension to Install (Windows) dialog box opens.

Locate and open the MacExtensions folder (Macintosh) or the WinExtensions folder (Windows) in the Lesson_17_Customize folder. Choose MX324944_m_superscript2.mxp from the list of extensions, and then click Open (Macintosh) or Install (Windows).


Extensions from the Dreamweaver Exchange Web site will begin with “MX” followed by a number and the extension name.

Dreamweaver will begin to install the extension.

Read any legal information about the extension that the author has provided.

To continue with the installation, click Accept.

If you click Decline, the extension will not be installed.


If you already have another version of the extension installed—or another extension with the same name—the Installer asks whether to remove the one already installed. If you click Yes, the previously installed extension is removed and the new extension is installed. If you click No, the installation is cancelled, leaving the existing extension in place.

If the installer doesn't encounter any problems, it displays a message to inform you that the extension has been successfully installed.

Click OK.

The Macromedia Extension Manager displays the extension name, version number, type, and author. The Type column tells you where the extension is installed: commands indicates the extension was installed in the Command menu, objects indicates the extension was installed in the Insert bar, and so on.

Repeat steps 2 through 5 to install the following extensions:

  • breadCrumbs.mxp

  • MX282845_fiXMovie.mxp

  • MX323286_advRandImage.mxp

The Macromedia Extension Manager will now display a list of the extensions you have installed.


To find more extensions, open the Macromedia Extension Manager. Choose File > Go to Macromedia Exchange to open the Macromedia Exchange for Dreamweaver Web page in your browser. You must be a member of macromedia.com to download, submit, or review extensions. This is a free membership. You can sign up and log in at the Dreamweaver Exchange home page. Macromedia provides the Dreamweaver Exchange Web site as a repository for all kinds of extensions. When you find an extension you're interested in on that site, you can download it via your Web browser and then install it in Dreamweaver by using the Extension Manager as you have done in this exercise. Macromedia creates some extensions, while others are created by third parties. Those extensions that are created or authorized by Macromedia are marked on the Dreamweaver Exchange Web site with a small Macromedia icon in the Approval column.

If you find an extension you want, the file you download is an extension package file and its name ends with .mxp. When you click an extension's name to download it, some Web browsers provide the option of opening the package file directly from its location on the Web instead of simply downloading the file. If you download the package file and save it on your hard disk, you'll have it handy in case you need to reinstall it later, but you'll have to open it explicitly (by double-clicking the file's icon on your desktop, for example) to install it. If you choose to open the package file from its current location, the Macromedia Extension Manager automatically launches to enable you to install the extension, but you won't retain a copy of the package file for later use. It's up to you which approach you prefer.

Choose File > Quit (Macintosh OS 9), Extension Manager > Quit Extension Manager (Macintosh OS X), or File > Exit (Windows) to close the Extension Manager. Restart Dreamweaver.

When you restart Dreamweaver, you will be able to use the new extensions.

Dreamweaver MX has changed dramatically from Dreamweaver 4. While many of the extensions that were used in Dreamweaver 4 will still work in Dreamweaver MX, not every extension will. Some extensions may cause errors in Dreamweaver MX. If you find this to be the case, just remove the problematic extension. The Extension Manager allows you to temporarily turn off extensions. If you run into a problem, you can test your extensions by turning them off.



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