Beyond The Bare Bones of HTML

CSSCSS

Alt & Meta TagsAlt & Meta Tags

MultimediaMultimedia

Agenda

CSSCSS ALTALT METAMETA Intro to MultimediaIntro to Multimedia Event HandlersEvent Handlers Assignment 7 and final projectAssignment 7 and final project

CSS for Multiple Pages

Remember you can use CSSRemember you can use CSS InlineInline EmbeddedEmbedded As an external documentAs an external document

This is a time saving thing and what This is a time saving thing and what you will do for your final project.you will do for your final project.

External CSS

Determine what CSS stuff you want to use.Determine what CSS stuff you want to use. Create your html page with the appropriate Create your html page with the appropriate

<p>, <H1>, <I> tags but do not use <p>, <H1>, <I> tags but do not use formatting.formatting.

In the head of your document instead of In the head of your document instead of embedded CSS, create a link to your external embedded CSS, create a link to your external CSS page.CSS page.

<LINK REL=stylesheet <LINK REL=stylesheet HREF="mystyles.css" TYPE="text/css">HREF="mystyles.css" TYPE="text/css">

External CSS Create a separate page with a .CSS Create a separate page with a .CSS

extension with the formatting for your links, extension with the formatting for your links, headers, paragraphs etc.headers, paragraphs etc.

H1 { color: green; font-family: impact } P I { color: white; background-color:

black; font-family: courier } P.first { text-indent: 3 cm; color: blue;

font-family: arial; background-color: pink; font-size: 20pt }

Then upload your html and CSS pagesThen upload your html and CSS pages

The ALT Tag

As the name implies this tag is useful for As the name implies this tag is useful for giving an alternate (usually text based) giving an alternate (usually text based) version of something.version of something.

This is specially useful for adaptive This is specially useful for adaptive technologytechnology Adaptive tech allows disabled users to use Adaptive tech allows disabled users to use

the web. the web. Often they use something called a “screen Often they use something called a “screen

reader” which turns the visual content of reader” which turns the visual content of the web into auditory content.the web into auditory content.

The ALT Tag

Images and ALT- the browser will use what Images and ALT- the browser will use what the alt tag designates instead of an image the alt tag designates instead of an image when the image is disabledwhen the image is disabledThis way if the image is disabled the This way if the image is disabled the

user is given an alternate description user is given an alternate description when the mouse passes over the imagewhen the mouse passes over the image

The contents of the alt tag is a text string The contents of the alt tag is a text string up to 1024 characters including spaces up to 1024 characters including spaces and other punctuationand other punctuation

The ALT Tag

Area and ALT- use this to give text Area and ALT- use this to give text alternatives to portions of an imagealternatives to portions of an imageSuch as in an image map to give a Such as in an image map to give a

text based version of the link. text based version of the link.

The META Tag Provides additional data for the head sectionProvides additional data for the head section

Has no end tagHas no end tag Has no “content” per seHas no “content” per se

<meta name=“keywords” content=“Cars, car <meta name=“keywords” content=“Cars, car models, buying information, car ratings”>models, buying information, car ratings”>

OROR

<meta name=“authors” content=“Bjork & <meta name=“authors” content=“Bjork & Tricky”>Tricky”>

Instead has name/value pairsInstead has name/value pairs

The META Tag

Name attribute typically “keywords”Name attribute typically “keywords” Content attribute- this provides the value of Content attribute- this provides the value of

the content and can be any string. Use the content and can be any string. Use quotes if there are spaces.quotes if there are spaces.<meta name=“keywords” content=“Cars, car <meta name=“keywords” content=“Cars, car

models, buying information, car ratings”>models, buying information, car ratings”>OROR<meta name=“authors” content=“Bjork & <meta name=“authors” content=“Bjork &

Tricky”>Tricky”>

The META Tag

The http-equiv attribute- supplies name The http-equiv attribute- supplies name for the name/value pair and gives for the name/value pair and gives instructions to the server that it will be instructions to the server that it will be receiving an HTML document.receiving an HTML document.

The charset attribute – defines the set The charset attribute – defines the set of characters- similar to defining the of characters- similar to defining the type of document but not as powerful or type of document but not as powerful or effective as http-equiveffective as http-equiv

The META Tag A cool thing you can do with meta- A cool thing you can do with meta-

make a slide show with the “refresh” make a slide show with the “refresh” field. field.

<meta http-equiv.=“Refresh” content=field <meta http-equiv.=“Refresh” content=field value”>value”>

Where field value defines how quick the Where field value defines how quick the refresh rate is.refresh rate is.

The META Tag

Refresh allows you to refresh the same Refresh allows you to refresh the same page at a given interval of time OR you page at a given interval of time OR you can refresh to a different page with a can refresh to a different page with a given interval of time.given interval of time.

<meta http-equiv=“Refresh” content=20; <meta http-equiv=“Refresh” content=20; URL=nextpage.html>URL=nextpage.html>

Multimedia From Webopedia:From Webopedia:The use of computers to present text, graphics, video, The use of computers to present text, graphics, video,

animation, and sound in an integrated way. Long animation, and sound in an integrated way. Long touted as the future revolution in computing, touted as the future revolution in computing, multimedia applications were, until the mid-90s, multimedia applications were, until the mid-90s, uncommon due to the expensive hardware required. uncommon due to the expensive hardware required. With increases in performance and decreases in With increases in performance and decreases in price, however, multimedia is now commonplace. price, however, multimedia is now commonplace. Nearly all PCs are capable of displaying video, Nearly all PCs are capable of displaying video, though the resolution available depends on the power though the resolution available depends on the power of the computer's video adapter and CPU. of the computer's video adapter and CPU.

Because of the storage demands of multimedia Because of the storage demands of multimedia applications, the most effective media are CD-ROMs. applications, the most effective media are CD-ROMs.

Multimedia

Is often thought of as just video. Is often thought of as just video. ActuallyActually AnimationAnimation SoundSound Video (this is a huge digital video file!)Video (this is a huge digital video file!)

Can help you add “excitement” to your Can help you add “excitement” to your site or can be something that annoys site or can be something that annoys usersusers

Multimedia

Does the multimedia add something to your Does the multimedia add something to your site?site?

Is the element (i.e. a video or song or some other thing) the product you’re selling?

Does the element maintain the user’s interest in a manner related to what your site is about?

OR Are you just being “flashy”

Multimedia

Remember the importance of bandwidth Remember the importance of bandwidth

and “Net Real estate”and “Net Real estate” Is there something else that spot could be

more effectively used for? Does it take up space that could be more

effectively used for searchable text? What technology do you want to use?

Streaming Media Technology (Video& Audio)

Real PlayerSailor Moon song demo RP soundCayman Islands Video demo RP video

Very popular. It allows many settings including speed of connection settings as well as variable bit rate settings.

Variable bit rate means that the video doesn’t care what speed your connection is, it will send out the information as fast as your connection will accept it.

You can tailor you’re videos to consider quality or speed

Streaming Media Technology (Video& Audio)

Windows Media PlayerVariable Bit RateNative player built into Internet

Explorer 5.0 +Speed/Quality settings

Streaming Media Technology (Video& Audio)

QuickTimeVariable Bit Rate is actually native.Doesn’t work quite as well on the PC

side of computing (but works very well on the Mac side)

Mac native format

Streaming Media Technology (Video& Audio)

MPEGVery High QualityPlug-ins available for all browsers and

media players availableWith proper hardware, can be played

onto a TV or VCRNative format for DVD, VCD, and

SVCD technologies

Using Video Create/locate your videoCreate/locate your video Edit your video Edit your video

Adobe PremierAdobe Premier Final Cut ProFinal Cut Pro

Compression Pixel Size Image Quality Frame Rate Compatibility

Compression

Pixel Size Different sizes:

160x120, 172x144, 246x243 (most web browsers)

320x240, 640x480, 720x480 (TV, HDTV,SHDTV)

Optimize to your screen real estate and keep in mind what is probably on your target audience’s desktops

Compression

Frame Rate (frames per second) Different rates:

15, 16, 24, (8mm, 16mm, 35mm film)24.97, 29.97 (PAL, NTSC)

Optimize for compression Optimize for Effect Optimize for output device

Compression

Image Quality Different levels:

Low, Good, Better, Best, Highest Optimize for compression Optimize for content

This is almost like for images; you always want to make sure that what is in the video is recognizable, so shoot and edit for that

Compression

Compatibility Different Browsers:

Netscape, IE Different Media Players:

Real Player, Windows Media, QuickTime Optimize for target audience

Your target audience will usually determine what is used.

Embedding Videos IE has extensions (dynsource attribute to

<img> tag, but not available in Netscape, see book) The actual tag for this is <embed> with the

src= attribute (along w/others) Coding

You can make it stream right awayYou can add controls or notbasically, anything you want to do, you

can with attributes like href, pluginspage, width, and height

Animation

Animated GifsAnimated Gifs FlashFlash ShockwaveShockwave

Other Multimedia

Sonic Foundry Acid ExpressSonic Foundry Acid Express Beatnik, Mixman StudioBeatnik, Mixman Studio

Sonic Foundry Sound ForgeSonic Foundry Sound Forge Cool Edit ProCool Edit Pro

Adobe PhotoshopAdobe Photoshop Corel Draw, Microsoft Draw, PhotoImpactCorel Draw, Microsoft Draw, PhotoImpact

Adobe ImageReadyAdobe ImageReady Fireworks, Sonic Foundry ViscosityFireworks, Sonic Foundry Viscosity