Bedienungsanleitung Adobe DREAMWEAVER CS5.5 (Seite 211 von 661) (Englisch)

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USING DREAMWEAVER

Adding content to pages

Last updated 3/28/2012

Anchor Points For Aligned Elements Displays an icon showing the location of HTML code for elements that accept the

align attribute. These include images, tables, ActiveX objects, plug-ins, and applets. In some cases, the code for the

element may be separated from the visible object.

Visual Server Markup Tags Displays the location of server markup tags (such as Active Server Pages tags and

ColdFusion tags) whose content cannot be displayed in the Document window. These tags typically generate HTML

tags when processed by a server. For example, a <CFGRAPH> tag generates an HTML table when processed by a

ColdFusion server. Dreamweaver reperesents the tag with a ColdFusion invisible element since Dreamweaver cannot

determine the final, dynamic output of the page.

Nonvisual Server Markup Tags Displays the location of server markup tags (such as Active Server Pages tags and

ColdFusion tags) whose content cannot be displayed in the Document window. These tags are typically set-up,

processing, or logic tags (for example, <CFSET>, <CFWDDX>, and <CFXML>) that do not generate HTML tags.

CSS Display: None Displays an icon showing the location of content that’s hidden by the display:none property in the

linked or embedded stylesheet.

Show Dynamic Text As Displays any dynamic text on your page in the format of {Recordset:Field} by default. If the

length of these values is long enough to distort your page’s formatting, you can change the display to {} instead.

Server-Side Includes Displays the actual contents of each server-side include file.

Colors

Web-safe colors

In HTML, colors are expressed either as hexadecimal values (for example, #FF0000) or as color names (red). A web-

safe color is one that appears the same in Safari and Microsoft Internet Explorer on both Windows and Macintosh

systems when running in 256-color mode. The conventional wisdom is that there are 216 common colors, and that

any hexadecimal value that combines the pairs 00, 33, 66, 99, CC, or FF (RGB values 0, 51, 102, 153, 204, and 255,

respectively) represents a web-safe color.

Testing, however, reveals that there are only 212 web-safe colors rather than a full 216, because Internet Explorer on

Windows does not correctly render the colors #0033FF (0,51,255), #3300FF (51,0,255), #00FF33 (0,255,51), and

#33FF00 (51,255,0).

When web browsers first made their appearance, most computers displayed only 265 colors (8 bits per channel (bpc).

Today, the majority of computers display thousands or millions of colors (16- and 32-bpc), so the justification for

using the browser-safe palette is greatly diminished if you are developing your site for users with current computer

systems.

One reason to use the web-safe color palette is if you are developing for alternative web devices such as PDA and cell

phone displays. Many of this devices offer only black and white (1-bpc) or 256 color (8-bpc) displays.

The Color Cubes (default) and the Continuous Tone palettes in Dreamweaver use the 216-color web-safe palette;

selecting a color from these palettes displays the color’s hexadecimal value.

To select a color outside the web-safe range, open the system color picker by clicking the Color Wheel button in the

upper-right corner of the Dreamweaver color picker. The system color picker is not limited to web-safe colors.

UNIX versions of browsers use a different color palette than the Windows and Macintosh versions. If you are

developing exclusively for UNIX browsers (or your target audience is Windows or Macintosh users with 24-bpc

monitors and UNIX users with 8-bpc monitors), consider using hexadecimal values that combine the pairs 00, 40, 80,

BF, or FF, which produce web-safe colors for SunOS.

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