Adobe Dreamweaver CS3 Manual do Utilizador descarregar pdf (Página 262)

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DREAMWEAVER CS3

User Guide

255

Applying behaviors to images

You can apply any available behavior to an image or image hotspot. When you apply a behavior to a hotspot,

Dreamweaver inserts the HTML source code into the

area tag. Three behaviors apply specifically to images: Preload

Images, Swap Image, and Swap Image Restore.

Preload Images Loadsimagesthatdonotappearonthepagerightaway(suchasthosethatwillbeswappedinwith

behaviors, AP elements, or JavaScript) into the browser cache. This prevents delays caused by downloading when it

is time for the images to appear.

Swap Image Swaps one image for another by changing the SRC attribute of the img tag. Use this action to create

button rollovers and other image effects (including swapping more than one image at a time).

Swap Image Restore Restores the last set of swapped images to their previous source files. This action is automati-

cally added whenever you attach the Swap Image action to an object by default; you should never need to select it

manually.

You can also use behaviors to create more sophisticated navigation systems, such as a navigation bar or a jump menu.

See also

“Insert a jump menu” on page 290

“Insert a navigation bar” on page 292

“Apply the Swap Image behavior” on page 363

“Apply the Preload Images behavior” on page 357

Inserting Flash content

About Flash file types

Dreamweaver comes with Flash objects you can use whether you have Flash installed on your computer or not.

BeforeyouusetheFlashcommandsavailableinDreamweaver,youshouldknowaboutthedifferentFlashfiletypes:

The Flash file (.fla) The source file for any project and is created in the Flash program. This type of file can only be

opened in Flash (not in Dreamweaver or in browsers). You can open the Flash file in Flash, then export it as an SWF

or SWT file to use in browsers.

The Flash SWF file (.swf) A compressed version of the Flash (.fla) file, optimized for viewing on the web. This file can

be played back in browsers and previewed in Dreamweaver, but cannot be edited in Flash. This is the type of file you

create when using the Flash button and Flash text objects.

The Flash template files (.swt) These files enable you to modify and replace information in a Flash SWF file. The files

are used in the Flash button object, which lets you modify the template with your own text or links, to create a custom

SWF to insert in your document. In Dreamweaver, these template files can be found in the Dreamweaver/Configu-

ration/Flash Objects/Flash Buttons and Flash Text folders.

You can download new button templates from the Adobe Exchange for Dreamweaver website

(www.adobe.com/go/dreamweaver_exchange) and place them in your Flash Buttons folder. For more information

on creating new button templates, see the article on that topic at www.adobe.com/go/flash_buttons.

September 4, 2007

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