Bedienungsanleitung Adobe DREAMWEAVER CS5.5 (Seite 111 von 661) (Englisch)

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Last updated 3/28/2012

Chapter 5: Managing assets and libraries

About assets and libraries

About assets

You can use Adobe® Dreamweaver® CS5 to keep track of and preview assets stored in your site, such as images, movies,

colors, scripts, and links. You can also drag an asset directly to insert it in a page of the current document.

You obtain assets from various sources. For example, you might create assets in an application such as Adobe®

Fireworks® or Adobe® Flash®, receive them from a co-worker, or copy them from a clip-art CD or graphics website.

Dreamweaver also provides access to two special types of assets—libraries and templates. Both are linked assets: when

you edit a library item or template, Dreamweaver updates all documents that use those assets. Library items generally

represent small design assets, such as a site logo or copyright. To control a larger design area, use a template instead.

More Help topics

“About Dreamweaver templates” on page 366

About library items

A library is a special Dreamweaver file containing a collection of individual assets or copies of assets that you can place

in your web pages. The assets in a library are called library items. Items that you can store in a library include images,

tables, sounds, and files created with Adobe Flash. You can automatically update all the pages that use a library item

whenever you edit the item.

For example, suppose you’re building a large site for a company that wants a slogan to appear on every page. You can

create a library item to contain the slogan and use that library item on every page. If the slogan changes, you can change

the library item and automatically update every page that uses it.

Dreamweaver stores library items in a Library folder within the local root folder for each site. Each site has its own

library.

You can create a library item from any element in the body section of a document, including text, tables, forms, Java

applets, plug-ins, ActiveX elements, navigation bars, and images.

For linked items such as images, the library stores only a reference to the item. The original file must remain at the

specified location for the library item to work correctly.

It can still be useful to store an image in a library item, though. For example, you could store a complete img tag in a

library item, which would allow you to easily change the image’s

alt text, or even its src attribute, throughout the site.

(Don’t use this technique to change an image’s

width and height attributes, though, unless you also use an image

editor to change the actual size of the image.)

Note: If the library item contains links, the links may not work in the new site. Also, images in a library item aren’t copied

to the new site.

When you use a library item, Dreamweaver inserts a link to it, rather than the item itself, in the web page. That is,

Dreamweaver inserts a copy of the HTML source code for that item into the document and adds an HTML comment

containing a reference to the original, external item. It is this external reference that makes automatic updating

possible.

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