HTML Authoring and Web Publishing Minder Chen, Ph.D. [email protected] HTML Authoring Tools/Editors Web Publisher External Applications Non-HTTP objects CGI: Common Gateway Interface Web Browser Web Server Internet Global Reach Broad Range Client End User Web Master Server.
Download ReportTranscript HTML Authoring and Web Publishing Minder Chen, Ph.D. [email protected] HTML Authoring Tools/Editors Web Publisher External Applications Non-HTTP objects CGI: Common Gateway Interface Web Browser Web Server Internet Global Reach Broad Range Client End User Web Master Server.
HTML Authoring and Web Publishing Minder Chen, Ph.D. [email protected] HTML Authoring Tools/Editors Web Publisher External Applications Non-HTTP objects CGI: Common Gateway Interface Web Browser Web Server Internet Global Reach Broad Range Client End User Web Master Server Course Description The basic architecture of the World Wide Web (WWW) and its implications to business people, IS professionals and end users is the focus of this course. Basic HTML (HyperText Markup Language) tags for defining document structure and appearance, for defining anchors and hyperlinks, plus advanced HTML features including tables, images, forms, and frames will be explained. Participants will create their own web page in the computer lab using HTML authoring tools. Issues on Web page design and style, as well as how to promote a home page will be discussed. © Minder Chen, 1996-2002 HTML & Web Publishing - 2 Course Outline • • • • • • • • • • • Introduction to World Wide Web HyperText Markup Language: Basic Tags Anchors, Links, and Uniform Resource Locator Images and Image Links Tables Multimedia Contents Forms HTML Extensions Frames Web Publishing Class Project Solutions © Minder Chen, 1996-2002 HTML & Web Publishing - 3 References • Laura Lemay, Teach Yourself Web Publishing With HTML 4 in 21 Days, Professional Reference Edition, 2nd Edition, SAMS, Feb. 2000. • HTML Online Resources: – B&N http://www.affiliates.net/affnet/traffic.asp – Introduction to HTML http://www.ncsa.uiuc.edu/General/Internet/WWW/HTMLPrimer.html – HTML Resources: http://www.w3.org/MarkUp/ – HTML 3.2: http://www.w3.org/MarkUp/Wilbur/ – http://wdvl.internet.com/Authoring/HTML/4/Tags/ – http://www.htmlcompendium.org/ – http://hotwired.lycos.com/webmonkey/reference/html_cheatsheet/ – HTML-kit: An HTML editor http://www.chami.com/html-kit/#download © Minder Chen, 1996-2002 HTML & Web Publishing - 4 The Architecture of WWW HTML documents Web Browser HTTP TCP/IP Client End User © Minder Chen, 1996-2002 Internet or Intranet Web Server HTML & Web Publishing - 5 WWW: What Is It? • • • • The World Wide Web (WWW) is a breakthrough in new technology designed to enable global, distributed information systems. From a user's perspective, the Web is a collection of documents, or pages, which contain text, images, and hypertext links to other pages. WWW merges the techniques of information retrieval and hypertext to create a powerful global information system. By simply pointing and clicking, the user has instant access to a mind-boggling collection of information, distributed across the globe. From an information providers point of view, the Web is an easy and efficient way of distributing any kind of information to a very large audience. Nobody is certain of how many users are on the Internet, but estimates start at 20 million. © Minder Chen, 1996-2002 HTML & Web Publishing - 6 Key Elements of Web • Hypertext: Non-linear links to anchors of the same document, or to different documents on the same or different web site. – Using HTML (HyperText Markup Language) links and anchors – Relying on URL (Uniform Resource Locators) addressing scheme • Multimedia: graphics, video, sound, etc. – Web browser can access networked hypermedia. – Hypermedia access of the web browser is facilitated by helper applications, plug-ins, or document viewers. • Network: Global reach and "Universal" access – Based on TCP/IP protocol. © Minder Chen, 1996-2002 HTML & Web Publishing - 7 Client-Server Model of http 1 helper app helper app helper app helper app helper app • Requesting a document via a URL address • Connection open Web Site Web Server Internet or Intranet Web Client 2 Static • Returning MIMEcompliance document • Connection close Dynamic MIME: Multipurpose Internet Mail Extension © Minder Chen, 1996-2002 Web contents • HTML documents • Images • Animation • Video clips • Sound bites • Java applets • Java Scripts • CGI scripts • Database access HTML & Web Publishing - 8 HTTP • HTTP: HyperText Transfer Protocol • Characteristics: – Runs on top of TCP/IP – Has a comprehensive addressing scheme, i.e. URL – An extensible and open representation for data type, using MIME header – Has a stateless protocol. There is no memory between client connections. – Is efficient – Is portable – Possible extensions, Secure HTTP (SHPPT), SSL, HTTP-Next Generation © Minder Chen, 1996-2002 HTML & Web Publishing - 9 The Extended Framework of WWW HTML Authoring Tools/Editors Web Designer & Publisher External Applications Non-HTTP objects • ColdFusion, • CGI (Perl) • ASP & ASP.NET • JAVA Servlet • Java Server Pages • Java Applet • JavaScript Web Browser Web Programmer Internet Global Reach Broad Range Client End User © Minder Chen, 1996-2002 Web Server Web Master HTML & Web Publishing - 10 Foundations Roadmap to the Web Master Fast Track Curriculum Content Development HTML Advanced HTML & Web Technologies Overview FrontPage Web Programming Database-Bound Web Flash XML Web User Interface Design Web Design Process PhotoShop • SQL • ColdFusion DHTML with DreamWeaverMX & JavaScript 163 hrs Server Administration IIS • Web Server • FTP Server • Web Site Analysis • Internet Security Active Server Pages ASP.NET Web Group Project © Minder Chen, 1996-2002 HTML & Web Publishing - 11 <html> <head> <title> HTML Sampler Web Page </title> </head> <body> <h1>HTML Sampler</h1> <img src="eyes.gif"><br> <b> List: </b> <ul> <li> Item 1 <li> <font size=+2>Item 2</font> <li> <i>Item 3</i> </ul> <table border=1> <tr> <th> Name</th> <th>Speciality </th> </tr> <tr> <td> Minder Chen</td> <td>MIS </td> </tr> <tr> <td> Justin Chen</td> <td>Aerospace </td> </tr> </table> <p> A sample of a form: <form method="post" action="http://hoohoo.ncsa.uiuc.edu/cgi-bin/post-query" > Name: <input type="text" size=20> <br> <input type="checkbox" name="html" value="YES"> Know HTML <br> <b><input type="submit" value="Submit your data"></b> </form> <hr> Developed by <a href="http://www.erols.com/aitc/"> Advanced IT Consulting</a> </body></html> Document source Web Authoring Environment Line Art Drawing Tool HTML Converter Digital Image Tool Graphic File Conversion Tool WYSIWYG HTML Editor HTML Source Editor HTML Validation Tools image file .gif or .jpeg Multimedia Authoring Tool HTML File <img src="abc.gif"> <a href="def.mov"> Local Developer Workstation ftp tool Web Hosting Environment Web Server video/sound file .mov, .avi, ... Web Site Management Tool Anatomy of a Tag <H1 ALIGN="CENTER"> HTML Tutorial </H1> <H1 ALIGN='CENTER'> HTML Tutorial </H1> <H1 ALIGN=CENTER> HTML Tutorial </H1> <H1 ALIGN="CENTER" > HTML Tutorial </H1> Attribute=value Opening tag Closing tag Element © Minder Chen, 1996-2002 HTML & Web Publishing - 14 A Simple HTML Document <HTML> <HEAD> <TITLE>The title shows up on your Web Browser</TITLE> </HEAD> <BODY> </BODY> </HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 15 Basic Tools and Editing Process • • • • • • • • • • • • • • From Start button Choose Programs Choose Accessories Choose WordPad Enter your HTML code Save it as Text File – Choose "Text Document" Format – Name the file with .htm extension Open the Internet Explorer Choose File / Open Page … Choose the file you just saved Open the file to view it Go back to edit your HTML code Use ALT-TAB key to switch back to the browser Click "Reload" button to refresh it Use ALT-TAB key to switch back to the Editor © Minder Chen, 1996-2002 HTML & Web Publishing - 16 Solution: Create a Web Page Save it at c:\temp\index.htm <html><head><title>Advanced IT Consulting</title></head><body> <h1>AITC Web Site</h1> <ul> <li>Company Introduction <li>Products <li>How to Contact us <li>Online HTML Resources </ul> Developed by Advanced IT Consulting <br> Contact us by email at [email protected] </body></html> AITC Web Site • Company Introduction • Products • How to Contact us • Online HTML Resources Developed by Advanced IT Consulting contact us at [email protected] © Minder Chen, 1996-2002 HTML & Web Publishing - 17 HTML Authoring Tools • HTML Editor – – – – – – – – – – – Notepad / WordPad AOLPress (www.aolpress.com) HTML-Kit (www.chami.com/html-kit/) HTML Assistant Pro (www.brooknorth.com) HotMetal from SoftQuad (www.sq.com) HotDog from Sausage Software (www.sausage.com) Netscape Communicator (www.netscape.com) PageMill from Adobe Microsoft FrontPage Macromedia Dreamweaver Recommendation: Use first a WYSIWYG authoring tool for common tasks and use another non-WYSIWYG authoring tool for advanced features not currently supported by the first tool. • HTML Conversion Tool • HTML Syntax Validation Tool (www.w3.org/MarkUp/html-test/) • Web Site Development Environment (e.g., FrontPage) © Minder Chen, 1996-2002 HTML & Web Publishing - 18 HTML Editors • HTML documents are in plain (also known as ASCII) text format and can be created using any text editor. • Free HTML editors: – Netscape Composer in Netscape Communicator – FrontPage Express in Internet Explorer 5.0 • HTML editors: – WYSIWYG HTML editors: FrontPage – Non-WYSIWYG HTML editors: HTML Assistant Pro © Minder Chen, 1996-2002 HTML & Web Publishing - 19 FrontPage Express • Install Internet Explore 5.0 • Use customized installation: Under Web Authoring tools: Choose FrontPage Express • FrontPage Express can be accessed from the Edit button of IE or from Accessories / Internet Tools © Minder Chen, 1996-2002 HTML & Web Publishing - 20 Class Project C:\temp\index.htm AITC Web Site • Company Introduction AITC • Products • How to Contact us • Online HTML Resources Developed by Advanced IT Consulting contact us at [email protected] profile.htm AITC Introduction AITC is ….. contact.htm product.htm [Home | Intro | Product | Contact] Product Listing ID 100 200 210 Name TV PC XY Price $250 $999 $234 © Minder Chen, 1996-2002 AITC Employees • Minder Chen • Bruce Johnson • Terry Smith Minder Chen 703-334-4566 [Index] Bruce Johnson 703-334-4577 [Index] Guest Book Entry: Name: Know HTML Submit Resume Web Site Home Page Web Page HTML & Web Publishing - 21 Introduction to HTML • Most web pages on the World Wide Web are created in a standard document format know as Hypertext Markup Language, or HTML. • In practical terms, HTML is a collection of styles (indicated by markup tags) that define the various components of a World Wide Web document. HTML was invented by Tim Berners-Lee while at CERN. • The "Hypertext" in HTML is the links that allow you to surf from one document to the next on the World Wide Web. • All Web browsing tools like Microsoft Internet Explorer, and Netscape Navigator, read HTML documents and allow you to browse these documents by traversing these links. • Not all browsing tools interpret or display HTML in the exact same way. This is why some pages look different in one browser than they do in another. It is important to keep this in mind when you are creating your web pages. Test your web pages on different browsers. © Minder Chen, 1996-2002 HTML & Web Publishing - 22 Anatomy of a Tag <H1 ALIGN="CENTER"> HTML Tutorial </H1> <H1 ALIGN='CENTER'> HTML Tutorial </H1> <H1 ALIGN=CENTER> HTML Tutorial </H1> <H1 ALIGN="CENTER" > HTML Tutorial </H1> Attribute=value Opening tag Closing tag Element © Minder Chen, 1996-2002 HTML & Web Publishing - 23 HTML Elements' General Syntax • <tag_name> text </tag_name> – <title> This is a title </title> – <b> Boldface </b> • <tag_name> Singleton Tags – <br> – <p> – <hr> <br /> </p> closing </p> is optional • <tag_name attribute=value> text </tag_name> – – – – <a name="home"> This Is the Top </a> <HR WIDTH=50% ALIGN='left' SIZE=12> <HR WIDTH=50% ALIGN=center SIZE=3> <HR WIDTH=100% ALIGN=left SIZE=6 NOSHADE> © Minder Chen, 1996-2002 HTML & Web Publishing - 24 Basic Elements of HTML Coding • Basic Markup Tags – – – – Titles Headings Paragraphs Lists • • • • Unnumbered Lists Numbered Lists Definition Lists Nested Lists – Preformatted Text: <pre> – Extended Quotes – Addresses • Line Breaks – Horizontal Rules <hr> – <br> and <nobr> • Character Formatting – – – – Physical Versus Logical: Use Logical Tags When Possible Using Character Tags: <b> <i> Special Characters Escape Sequences © Minder Chen, 1996-2002 HTML & Web Publishing - 25 HTML Tags: Document Structure • <HTML></HTML>: start and end of HTML document • <HEAD></HEAD>: document meta-information start and end • <BODY></BODY>: content of document displayed by the browser © Minder Chen, 1996-2002 HTML & Web Publishing - 26 Headings: Level 1 to 6 <html> <head> <title>Headings </title> </head> <body> <h1>Heading 1 (Top Level)</h1> <h2>Heading 2</h2> <h3>Heading 3</h3> <h4>Heading 4</h4> <h5>Heading 5</h5> <h6>Heading 6 (Bottom Level) </h6> </body> </html> 1. Xxxxx dsfdsfdsf 2. sadsdsad 2.1 sadsad 2.2 ddddd 2.2.1 xxxx 3. sssss • Don’t use the <h1>...<h6> to manipulate your font size. • Use <font> tag • Use <big>Test</big> or <small>Test</small> © Minder Chen, 1996-2002 HTML & Web Publishing - 27 Physical and Logical Styles in HTML • If physical and logical styles produce the same result on the screen, why are there both? It is because of the philosophy of SGML, which can be summed in a Zen-like mantra: "Trust your browser.'' • In the ideal HTML universe, content is divorced from presentation. Thus, HTML tags a level-one heading as a level-one heading, but does not specify that the level-one heading should be displayed. • The advantage of this approach (it's similar in concept to style sheets in many word processors) is that if you decide to change level-one headings to be 20-point left-justified Helvetica, all you have to do is change the definition of the level-one heading in the presentation device (i.e., your World Wide Web browser) or cascading style sheet (CSS). • The other advantage of logical tags is that they help enforce consistency in your documents. It's easier to tag something as <H1> than to remember that level-one headings are 24-point bold Times or whatever. The same is true for character styles. For example, consider the <STRONG> tag. Most browsers render it in bold text. However, it is possible that a reader would prefer that these sections be displayed in red instead. Logical styles offer this flexibility. © Minder Chen, 1996-2002 HTML & Web Publishing - 28 Logical Styles • <DFN>: for a word being defined. Typically displayed in italics. (NCSA Mosaic is a World Wide Web browser.) • <EM>: for emphasis. Typically displayed in italics. (Watch out for pickpockets.) • <CITE>: for titles of books, films, etc. Typically displayed in italics. (A Beginner's Guide to HTML) • <CODE>: for snippets of computer code. Displayed in a fixed-width font. (The <stdio.h> header file) • <KBD>: for user keyboard entry. Should be displayed in a bold fixed-width font, but many browsers render it in the plain fixedwidth font. (Enter passwd to change your password.) • <SAMP>: for computer status messages. Displayed in a fixed-width font. (Segmentation fault: Core dumped.) • <STRONG>: for strong emphasis. Typically displayed in bold. (Important) • <VAR>: for a "metasyntactic'' variable, where the user is to replace the variable with a specific instance. Typically displayed in italics. (rm filename deletes the file.) © Minder Chen, 1996-2002 HTML & Web Publishing - 29 Physical Styles • • • • • <B>: bold text <I>: italic text <U>: Underline text (Don’t use it) <TT>: typewriter text, e.g. fixed-width font <PRE>: Use a non-proportional font to maintain the white spaces, tabs, and carriage returns. Examples: • <b>Boldface</b> • <PRE> This is a tabbed line </pre> • Correct: <b> <i> Boldface and italic </i> </b> • Incorrect: <i> <b> Boldface and italic </i> </b> © Minder Chen, 1996-2002 HTML & Web Publishing - 30 Logical and Physical Styles <H3>Physical Styles</H3> <I>Italic</I> <BR><B>Bold</B> <BR><U>Underline</U> <BR><TT>Type writer font</TT> <BR><B><I>Bold and Italic</I></B> <BR><STRIKE>Strikethrough</STRIKE> <BR><BLINK>Blink in Netscape Browser</BLINK> <BR><marquee>Maruqee sign in Internet Explorer</marquee> <H3>Logical Styles</H3> <SUB>Subscirpt</SUB> and <SUP>Superscript</SUP> <BR><em>emphasis</em> <BR><strong>strong</strong> <BR><TT>sample</TT> <BR><code>code such as main() { }</code> <BR><kbd>keyboard</kbd> <BR><var>variable xyz, abc,</var> <BR><cite>citation</cite> <ADDRESS> 100 Main Street, Major City, MD 20817</ADDRESS> © Minder Chen, 1996-2002 HTML & Web Publishing - 31 Paragraph • The browser ignores any indentations or blank lines in the source text. HTML relies almost entirely on the tags for formatting instructions, and without the <P> tags, the document becomes one large paragraph. • <p>...</p> The closing tag </p> is optional • <p> Start a new paragraph • <p align=center> HTML 3.0 feature • <br> Force a line break • <!-- This is a comment line --> • • • • <h1 align=center>...</h1> <center>...</center> <nobr> Do not wrap the enclosed text </nobr> Force a space character © Minder Chen, 1996-2002 HTML & Web Publishing - 32 Paragraph: To Break or No To Break <NOBR>This is a paragraph. Spaces, line breaks, empty lines do not work in HTML documents.</NOBR> You need to use line break tag <br>. This line has a line break. <BR>This line is followed by a horizontal line. <HR> <PRE>Another paragraph after <hr> the <hr></PRE> This is another paragraph with extra space. © Minder Chen, 1996-2002 HTML & Web Publishing - 33 Horizontal Lines <HR> <HTML> <HEAD> <TITLE>Horizontal Line </TITLE> </HEAD> <BODY> <HR> <!-- Netscape extensions --> <HR WIDTH=50% ALIGN=left SIZE=12> <HR WIDTH=50% ALIGN=center SIZE=3> <HR WIDTH=100% ALIGN=left SIZE=6 NOSHADE> </BODY> </HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 34 Listing • HTML supplies five list elements. With the exception of DL, list elements are composed of one or more LI (list item) elements. You can nest lists by inserting a UL, OL, etc., inside a list item (LI). • Five list types: – OL: ordered list. Items in this list are numbered automatically by the browser. The numbering will reflect nesting levels. – UL: unordered list. Items in this list start with a list mark such as a bullet. Browsers will usually change the list mark in nested lists. – MENU: menu list. This is an unordered list. Each LI element in this kind of list should be no longer than one line. – DIR: directory list. This is an unordered list. Each LI element in this kind of list should be no longer than 24 characters. – DL: list of definitions. This is an unordered list. This kind of list is different from the others. Each `item' in a DL consists of one or more terms (DT elements), followed by definitions (DD elements). © Minder Chen, 1996-2002 HTML & Web Publishing - 35 Unordered Lists: <UL>, <LI>, </UL> <html> <head> • <UL>...</UL> Netscape Extended Attribute: <title>Listing </title> • TYPE="..." DISC, CIRCLE, SQUARE </head> <body> • <UL TYPE="SQUARE"> …. </UL> <p> <h3>A Simple Unordered List</h3> <ul> <li>First item <li>Second Item </ul> <h3>Multiple Level & Unordered List</h3> <ul> <li>Level 1 <ul> <li>Level 1.1 <li>Level 1.2 </ul> <li>Level 2 <ul> <li>Level 2.1 <li>Level 2.2 </ul> </ul> </body> </html> © Minder Chen, 1996-2002 HTML & Web Publishing - 36 Ordered Lists: <OL>, <LI>, </OL> <html> <head> • <OL>...</OL> Netscape Extended Attributes: <title>Ordered Listing </title> • TYPE="..." A, a, I, i, 1 </head> <body> • Start="2" The value to start the list with <p> <h3>A Simple Ordered List</h3> • e.g., <OL type="A" start="3"> <li> … <li> … </OL> <ol> <li>First item <li>Second Item </ol> <h3>Multiple Level & Ordered List</h3> <ol> <li>Level 1 <ol> <li>Level 1.1 <li>Level 1.2 </ol> <li>Level 2 <ol> <li>Level 2.1 <li>Level 2.2 </ol> <li>Mixing order and unorder list <ul> <li>Level 3.1 <li>Level 3.2 </ul> </ol> </body> </html> HTML & Web Publishing - 37 © Minder Chen, 1996-2002 Menu List: <menu> <li> <\menu> <html> <head> <title>Menu </title> </head> <body> <p> <h3>A Simple Menu</h3> <menu> <li>First menu item <li>Second menu item </menu> <h3>Multiple Level Menu</h3> <menu> <li>Level 1 <menu> <li>Level 1.1 <li>Level 1.2 </menu> <li>Level 2 <menu> <li>Level 2.1 <li>Level 2.2 </menu> </menu> </body> </html> © Minder Chen, 1996-2002 HTML & Web Publishing - 38 Glossary: <DL>, <DT>, <DD> </DL> <html> <head> <title>Glossary </title> </head> <body> <p> <h3>WWW Glossary</h3> <dl> <dt> HTML <dd> HyperText Markup Language. HTML is a markup language that is used to define web pages. <dt> URL <dd> Uniform Resource Locator. URL is used to locate (specify the address) a document (or resource) on the WWW. <dt> WWW <dd> World Wide Web. An Internet-based networked hypertext system. </dl> </body> </html> DL: Definition List DT: Definition Term DD: Definition Description © Minder Chen, 1996-2002 HTML & Web Publishing - 39 Special Characters • There are four characters that have special meanings in HTML. When you want to use them, you need to have a special sequence pf characters (escape sequence) to represent them. • These four characters are: < (the left angle bracket) > (the right angle bracket) & (ampersand) " (quotation marks) © Minder Chen, 1996-2002 HTML & Web Publishing - 40 Escape Sequences • HTML includes character combinations, called escape sequences, to represent these characters in an HTML document, They are: < (the escape sequence for <) > (the escape sequence for >) & (the escape sequence for &) " (the escape sequence for “) (the escape sequence for space character) • To display <HR> as it is in an HTML document, you should write it in the following two ways: – <HR> – <xmp><HR></xmp> • Note: It is important to note that escape sequence are case-sensitive , unlike all other HTML tags. © Minder Chen, 1996-2002 HTML & Web Publishing - 41 More Escape Sequences • There are many more escape sequences for non-ASCII characters. Some of the more common ones are: ö (the escape sequence for a lowercase o with an umlaut, ö) &ntild; (the escape sequence for lowercase n with a title; ñ) È (the escape sequence for an uppercase E with a grave accent; è) © (Netscape extension for ©) ® (Netscape extension for ®) • Reference for special characters: http://hotwired.lycos.com/webmonkey/reference/special_characters/ © Minder Chen, 1996-2002 HTML & Web Publishing - 42 Document Meta Tags • <TITLE></TITLE>: document title; goes in <HEAD> session. • <BASE href="URL">: base reference, the full URL of the current document; goes in HEAD <HTML><HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Author" CONTENT="Minder Chen"> <META NAME="GENERATOR" CONTENT="Mozilla/4.03 [en] [Netscape]"> <META NAME="Keywords" CONTENT="HTML, hypertext, aitc"> <META NAME="description" CONTENT="HTML tutorial for everyone"> <TITLE>test</TITLE></HEAD> For traditional Chinese: <META http-equiv="Content-Type" content="text/html; charset=big5" > © Minder Chen, 1996-2002 HTML & Web Publishing - 43 Exercise: Contact Page contact.htm <html><head><title>AITC Contact Information</title></head> <body> <b>[ Home | Profile | Product | Contact | Resource ]</b> <h1>AITC Contacts</h1> <ul> <li>Minder Chen <li>Bruce Johnson <li>Robert Smith </ul> <hr size=6> Minder Chen<br> 703-334-4566<br> <p> Bruce Johnson<br> 703-334-4577<br> <p> Robert Smith<br> 703-334-5555<br> <p><br><br><br><br><br><br><br><br><br><br><br><br> </body></html> © Minder Chen, 1996-2002 HTML & Web Publishing - 44 Hypertext and Links • • • • • • • Introduction to hypertext Intra-document Links and Anchors Inter-document Links URL Images and Inline image Image links Image map © Minder Chen, 1996-2002 HTML & Web Publishing - 45 Introduction to Hypertext • Definition of hypertext: "A combination of natural language text with the computer's capacity for interactive branching, or dynamic display... of a nonlinear text." -- Ted Nelson • The idea of hypertext system can be traced back to Vannevar Bush, President Roosevelt's Sciences Advisor, 1945 article "As We May Think" in which he described the idea of mechanize the scientific literature system. • Now hypertext really means hypermedia that include not just text, but also audio, graphic, video, etc. • Hypertext documents on WWW usually are stored in a special format called HTML, stands for HyperText Markup Language. • A window will be used to view part of the hypertext document retrieved. • On your Netscape Browser, the underlying HTML link to another Web document will be displayed at the message bar when you move mouse pointer over a link. © Minder Chen, 1996-2002 HTML & Web Publishing - 46 Intra-document (Internal) Hypertext Links Intra-document hyperlink links Table of contents Section 1: aaa Section 2: bbb Section 3: ccc Viewing area of the document Section 1: aaa This is section 1 ... Back to the Table of Content Section 2: bbb This is section 2 ... © Minder Chen, 1996-2002 HTML & Web Publishing - 47 Inter-document (External) Hypertext Links Document1 ... Link to document 2 ... Document2 ... ... Link to Section D of Doc3 ... ... ABCD an image map link an image link Toolbox Document Hammer ... Screw Driver .... © Minder Chen, 1996-2002 Document2 ... ... Section D ... ... Link to Document1 ... ... HTML & Web Publishing - 48 Hypertext Links • A hypertext link is a pointer pointing to another document or another part of the current document. • These linked documents can be on the same WWW server or on WWW servers distributed globally. • Hypertext links are represented as a purple color and underlined texts, or as a graphic object (inline graphics). When you move the mouse cursor over a hypertext link, the mouse cursor will change from a pointer to a pointing hand. • You may use Image Maps such that different parts of the graphic representing links to different documents. Anchor: <a name="anchor"></a> Hyperlink: <a href="URL#anchor">Hot words</a> © Minder Chen, 1996-2002 HTML & Web Publishing - 49 Linking and Anchoring x.htm <html> … <body> … <a href="y.htm">Top of y</a> … … <a href="y.htm#sec2"> Section 2 of y</a> … </body> </htm> © Minder Chen, 1996-2002 y.htm <html> … <body> <h1>Section 1</h1> … <a href="#sec2"> Go to Section 2</a> … … <a name="sec2"></a> <h1>Section 2<h1> … </body> </htm> HTML & Web Publishing - 50 Example: Internal Link <ul> <li> <a href="#minder">Minder Chen</a> <li>Bob Johnson </ul> <a name="minder"></a>Minder Chen<br> 703-999-8888<br> © Minder Chen, 1996-2002 HTML & Web Publishing - 51 External Link Using Relative URL index.htm Contact <a href="contact.htm#johnson">Bruce Johnson</a> for web problems. contact.htm <a name=" johnson "></a> Bruce Johnson<br> 703-334-4577<br> © Minder Chen, 1996-2002 HTML & Web Publishing - 52 Contact.htm <html><head><title>AITC Contact Information</title></head> <body><a name="top"><a><h1>AITC Contacts</h1> <ul> <li><a href="#chen">Minder Chen</a> <li><a href="#johnson">Bruce Johnson</a> <li><a href="#smith">Robert Smith</a> </ul> <hr width=6> <a name="chen"></a> Minder Chen<br> 703-334-4566<br> [ <a href="#top">Index </a>] <p> <a name="johnson"></a> Bruce Johnson<br> 703-334-4577<br> [ <a href="#top">Index </a>] <p> <a name="smith"></a> Robert Smith<br> 703-334-5555<br> [ <a href="#top">Index </a>] <p><br><br><br><br><br><br><br><br><br><br><br><br> </body></html> © Minder Chen, 1996-2002 HTML & Web Publishing - 53 Netscape Communicator (Composer) © Minder Chen, 1996-2002 HTML & Web Publishing - 54 Defining a Link in Netscape Composer © Minder Chen, 1996-2002 HTML & Web Publishing - 55 Use a Relative URL • Examples: – <a href="http://www.aitc.com/~mchen/fileX.htm"> Another file in the same directory</a> – Can be written as <a href="fileX.htm">Another file in the same directory</a> – <a href="subdir/fileY.htm">Another file in the subdirectory under current document's directory</a> • Reasons to use relative URLs – Less typing is required to enter them. – If you move all the files to a different location but keep the same directory structure you don't have to revise the URLs. – The same file referred to by a relative URL can be accessed by different schemes (for example both 'http' and 'ftp'). © Minder Chen, 1996-2002 HTML & Web Publishing - 56 Document Directory Structure Web document root y.htm (in the html folder) <a href="/html/y.htm">Root relative path</a> <a href="../y.htm">Document relative path</a> x.htm (<a href="x.htm">in the same folder</a>) 10_link.htm (Current Document) 10_test.htm (<a href="webpub/10_test.htm"></a>) oracle.htm (<a href="../../nvcc/oracle.htm"></a> © Minder Chen, 1996-2002 HTML & Web Publishing - 57 Relative URL © Minder Chen, 1996-2002 HTML & Web Publishing - 58 Links Between Documents <html> <head> <title>Links with Relative URLs </title> </head> <body> <h2>Links with Relative URLs</a></h2> <h3>Links to another file on the same web site and in the same directory </h3> <ul> <li>Go to another document in the same directory <ul> <li><a href="10_link.htm">Go to the Anchors and Hyperlinks</a> <br> <li><xmp><a href="10_link.htm">Go to the Anchors and Hyperlinks</a> <br></xmp> </ul> <li>Go to an anchor of another document in the same directory <ul> <li><a href="10_link.htm#section2">Go to Section 2 of the Anchors and Hyperlinks</a> <br> <li><xmp><a href="10_link.htm#section2">Go to the Section 2 of the Anchors and Hyperlinks</a> <br></xmp> </ul> </ul> <h3>Links to another file on the same web site but in a different directory </h3> <ul> <li>Go to a document in a subdirectory directory of the current directory <ul> <li><a href="webpub/10_test.htm">Go to a 10_test.htm in the subdirectory /webpub under /tutor </a> <li><xmp><a href="webpub/10_test.htm">Go to 10_test.htm </a></xmp> in a subdirectory webpub under /tutor </ul> <li>Go to a document in a different directory <ul> <li><a href="../../nvcc/oracle.htm">Go to Oracle training</a> <li><xmp><a href="../../nvcc/oracle.htm">Go to Oracle training</a> </xmp> </ul> </ul> </body> </html> HTML & Web Publishing - 59 © Minder Chen, 1996-2002 Creating Links from Bookmarks in Netscape Composer Drag-and-drop a bookmark item into the HTML document in the editing mode. © Minder Chen, 1996-2002 HTML & Web Publishing - 60 URL: Uniform Resource Locator • Uniform Resource Locator: A standard method of identifying any document or resource on the Internet. • The port number can generally be omitted. The default http port name is 80. Unless someone tells you otherwise, leave it out. • In http, if filename is omitted, a default file such as index.html may be retrieved. – http://www.aitc.com/mydoc/ – http://www.aitc.com:80/mydoc/index.html • Directory path name may be case sensitive. © Minder Chen, 1996-2002 HTML & Web Publishing - 61 Resource Types • Resource types: – http: A file on a World Wide Web server – ftp: A file on an anonymous FTP server – mailto: Send an e-mail to an e-mail address – file: A file on your local system – gopher: A file on a Gopher server – WAIS: A file on a WAIS server – news: An Usenet newsgroup – telnet: A connection to a Telnet-based service • More examples: – – – – – ftp://ftp.ncsa.uiuc.edu/Web gopher:make.up.something news:comp.databases.oracle mailto:[email protected] telnet://osf1.gmu.edu © Minder Chen, 1996-2002 Send an email ([email protected]) to <a href="mailto:[email protected]"> Minder Chen</a> HTML & Web Publishing - 62 Defining Absolute Hyperlinks: <a href="URL"> Hot words </a> <HTML><HEAD><TITLE>Hyperlinks to other web sites</TITLE></HEAD><BODY> <H2>Using Absolute URLs </H2> <P>Absolute URLs are used to define links to resources on other web sites. </P> <UL> <LI><A href="http://www.aitc.com/~mchen/justin/spelling.htm#week1">Justin's first week's spelling </A> <br> <LI><A href="http://www.yahoo.com/">Yahoo Directory</A><br> <LI><a href="ftp://ftp.sausage.com/download.zip">Download hotdog HTML editor software</a><br> </UL></BODY></HTML> <BASE href="URL"> Set the absolute URL against which all other relative URLs are resolved. © Minder Chen, 1996-2002 HTML & Web Publishing - 63 Include Inline Images <HTML><HEAD> <TITLE>Image </TITLE> </HEAD> <BODY> <H2>Include images in your HTML documents:<xmp><IMG SRC="image.gif"></xmp></H2> <IMG SRC="money.gif"> How to make money on WWW? <br> <IMG SRC="phone.gif" ALIGN=TOP> Call us! <IMG SRC="phone.gif" ALIGN=MIDDLE> Call us! <IMG SRC="phone.gif" ALIGN=BOTTOM> Call us! <br> <IMG SRC="phone.gif" ALT="[an image of phone]"> Call us! </BODY></HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 64 ALIGN © Minder Chen, 1996-2002 HTML & Web Publishing - 65 Download Image Files Click right mouse button on top of an image in a web page © Minder Chen, 1996-2002 HTML & Web Publishing - 66 Example Small Lion: <img src="http://www.erols.com/aitc/slion.gif"><br> Big Lion: <img src="http://www.erols.com/aitc/blion.gif"><br> Hot image using a thumb nail image to link to a larger image: <a href="http://www.erols.com/aitc/blion.gif"> <img src="http://www.erols.com/aitc/slion.gif"> </a> © Minder Chen, 1996-2002 HTML & Web Publishing - 67 Netscape Composer: Defining IMG Tag’s Attributes © Minder Chen, 1996-2002 HTML & Web Publishing - 68 <img> syntax • <img src="slion.gif" align=left> Text float around the image that is placed on the left. • <img src="slion.gif" align=right> • <br clear="all | left | right | none"> – Break the floating text. – Clear="left": The next line begins at the nearest line at either margin following any floating objects. © Minder Chen, 1996-2002 HTML & Web Publishing - 69 Defining Image Link in Netscape Composer © Minder Chen, 1996-2002 HTML & Web Publishing - 70 Using IMG Tag Advanced IMG Tag Attributes: <IMG SRC="nvcclogo.gif" LOWSRC="low_resolution.gif" ALT="NVCC Logo" BORDER=0 HEIGHT=32 WIDTH=32 ALIGN=LEFT> Image Link: <A HREF="http://www.aitc.com/"> <IMG SRC="AITCLOGO.gif"></A> © Minder Chen, 1996-2002 HTML & Web Publishing - 71 Image File Types • GIF (pronounced as jiff): Graphics Interchange Format. Limited to 256 colors. Unisys owns the copyright of the LZW compression algorithm. – GIF87 – GIF89a supports transparency and interlacing – Animated GIF: Use tools such as Microsoft GIF Animator at http://www.microsoft.com/imagecomposer/ • JPEG (pronounced jay-peg): Joint Photographic Experts Images. Good for photographic images. • Use thumbnail for big image file. • Use interlacing for big files. • Cut down number of colors used to reduce file size. 8 bit/pixel resolution is 256 colors. • Max 5 seconds download time per page. © Minder Chen, 1996-2002 HTML & Web Publishing - 72 Examples of Using Images © Minder Chen, 1996-2002 HTML & Web Publishing - 73 HTML Code <HTML> <HEAD> <TITLE>Find and Use Images and Icons</TITLE> </HEAD> <BODY> <a href="http://www.yahoo.com/computers/multimedia/pictures/clip_art/"> Clip art collection on Yahoo</a> <br> <img src="left.gif"> <img src="right.gif"> <img src="down.gif"> <img src="up.gif"> <img src="top.gif"> <img src="eyes.gif"> <br> <img src="ball2blue.gif"> Go back to where you are! <img src="goback.gif"> <br> <img src="ball2blue.gif"> Money grows! <img src="money1.gif"> <br> <img src="ball2blue.gif"> Using thumbnail <a href="nailbig.gif"><img src="nailsmll.gif">with Interlace </a><br> <img src="ball2blue.gif"> Using thumbnail <a href="nailbig2.gif"><img src="nailsmll.gif"> Without interlace</a><br> </BODY> </HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 74 Link to an External Image File • Text link to an external image file <a href="nailbig.gif"> Go to nail</a> • A thumbnail image link to an external image file <a href="nailbig.gif"><img src="nailsmll.gif"></a> • Both thumbnail image link and text link to an external image file <a href="nailbig.gif"><img src="nailsmll.gif">Go to nail</a> © Minder Chen, 1996-2002 HTML & Web Publishing - 75 Graphic and Image Tools • Shareware product: Paint Shop Pro for Windows 95/NT 4.0 from JASC, Inc. at http://www.jasc.com/pspdl.html – Resizing – File format conversion • Use tools such as Adobe Illustrator for more complicated drawings (www.adobe.com) • Adobe Photoshop has been the definitive application for digital image enhancement, retouching, and photo composition and it is also the de facto standard for preparing images for the World Wide Web. • Hardware: Scanner, Digital Camera, or Video capturing system © Minder Chen, 1996-2002 HTML & Web Publishing - 76 Tables: <TABLE > </TABLE> <HTML> <HEAD> <TITLE> Tables </TITLE> </HEAD> <H3>Tables </H3> <BODY> A basic table that has three columns and two rows. <TABLE BORDER> <TR> <TD>A</TD> <TD>B</TD> <TD>C</TD> </TR> <TR> <TD>D</TD> <TD>E</TD> <TD>F</TD> </TR> </TABLE> </BODY> </HTML> • TD: Table Data • TR: Table Row • TH: Table Header (Header Cell) © Minder Chen, 1996-2002 HTML & Web Publishing - 77 Product.htm <HTML><HEAD><TITLE> AITC Products </TITLE></HEAD> <BODY>Product Table <TABLE BORDER=3> <TR><TH>ID</TH> <TH width=150>Name</TH> <TH >Price</TH> <TH>Comment</TH></TR> <TR><TD>PC100</TD><TD>Compaq Computer</TD><TD align=right>$2,000</TD> <TD><a href="http://www.compaq.com/">Compaq's Web Site</a></TD> </TR> <TR> <TD>TV25</TD> <TD>25 " Sony TV</TD> <TD align=right>$300</TD> <TD> </TD> </TR> <TR valign=top> <TD>Pet001</TD> <TD>Little Lion</TD> <TD>$50</TD> <TD><img src="slion.gif"></TD> </TR> <TR><TD colspan=4>10% discount off the list price today</TD></TR> </TABLE> </BODY></HTML> • TH: Table Header (Header Cell) © Minder Chen, 1996-2002 HTML & Web Publishing - 78 Editing a Table in Netscape Composer © Minder Chen, 1996-2002 HTML & Web Publishing - 79 New Table Creation © Minder Chen, 1996-2002 HTML & Web Publishing - 80 Netscape Composer: Cell Properties © Minder Chen, 1996-2002 HTML & Web Publishing - 81 More Table Examples <HTML><HEAD><TITLE> Tables </TITLE></HEAD> <BODY> <H3>Tables </H3> <TABLE BORDER> <CAPTION ALIGN=top>Table 1. WWW Course Grade Analysis</CAPTION> <TR><TH ROWSPAN=2></TH><TH ></TH> <TH COLSPAN=2>Degree</TH> </TR> <TR><TH></TH> <TH>MBA</TH><TH>Others</TH></TR> <TR><TH ROWSPAN=2>Gender</TH> <TH>Males</TH><TD>3.5</TD><TD>3.1</TD> </TR> <TR><TH>Females</TH><TD>3.6</TD><TD>3.4</TD> </TR> </TABLE> </BODY></HTML> <caption align="top | bottom | left | right"> Immediately following the table opening tag. © Minder Chen, 1996-2002 HTML & Web Publishing - 82 External Sounds and Animation • If you want to do the animation, video and audio, you need other multimedia applications development tools. • You can use your own favorite applications tools to design your own graphics , audio, videos and so on by giving proper file extension. © Minder Chen, 1996-2002 HTML & Web Publishing - 83 Common MIME File Types for Multimedia Documents • The Netscape browser will be able to recognize the file followed by these extensions – – – – – – AIFF sound JPEG graphic MPEG movie PostScript document QuickTime movie WAVE sound .au .jpeg or .jpg .mpeg or .mpg .ps .mov .wav AIFF: Audio Interchange File Format MPEG: Moving Picture Experts Group 5-seconds of audio Size Format 36KB WAV 4KB RealAudio 14.4 8KB RealAudio 28.8 © Minder Chen, 1996-2002 HTML & Web Publishing - 84 Configure Your Browser for Viewing Multimedia Documents • In Netscape: General Preferences|Helpers • Use the General Helpers preferences panel to create or reconfigure how a file's format maps to a external helper application. • Netscape has the built-in capability to interpret and display several formats, including the HTML format used by HTTP servers. • Helper applications are used by Netscape to interpret files that it has retrieved but is unable to read. • You can designate MIME file types (a method of differentiating file formats using a suffix appended to a file name), helper applications and their associated actions. • When you display the Helpers general preferences panel, you see a scrolling text field that lists the file formats and helper applications available to Netscape. © Minder Chen, 1996-2002 HTML & Web Publishing - 85 Define Helper Apps: Edit / Preferences... © Minder Chen, 1996-2002 HTML & Web Publishing - 86 Linking to External Multimedia Files Point to site to download the required helper application Specify File Size Explicitly © Minder Chen, 1996-2002 HTML & Web Publishing - 87 HTML Code <html> <head> <title>777 Virtual Tour</title> </head> <body> <h1>777 Virtual Tour</h1> <img src="/gif/777.gif"> <p> In order to take the virtual tour of the 777, you'll need QuickTime VR software on your computer. Click here to retrieve <a href="http://qtvr.quicktime.apple.com/">QuickTime VR</a> and instructions on how to load it onto your machine. Then come back and take the tour! <p> <ul> <li><a href="/qtvr/777fd.mov">Tour the flight deck of the 777</a>. (155K) <li><a href="/qtvr/777in.mov">Tour the spacious first class interior of the 777</a>. (155k) Correct </ul> File Type <hr> </body></html> © Minder Chen, 1996-2002 HTML & Web Publishing - 88 Using <object> Tag for Multimedia Objects <embed src="test.mpg"> Demo of a movie </embed> HTML 4.0 <html><head> <title>MPEG Video</title></head> <body> <object data="test.mpg" type="video/mpeg"> Demo of a movie</object> </body></html> <html><head><title>MPEG Video</title> </head><body> <a href="test.mpg">Demo of a movie<a> <embed src="test.mpg" HEIGHT=300 WIDTH=200> Demo of a movie </embed> </body></html> Test.mpg can be found at http://www.erols.com/aitc/html/test.mpg © Minder Chen, 1996-2002 HTML & Web Publishing - 89 Forms • Support interactive applications: Guest Books, User Survey, Online Shopping, etc. • Need to use CGI scripts to process form inputs • No local input data validation: clientside scripting using VB Script or JavaScript may allow you to perform local input data validation © Minder Chen, 1996-2002 HTML & Web Publishing - 90 Profile.htm: First Version <HTML><HEAD><TITLE>Form</TITLE> </HEAD><BODY><H1> Guest Book </H1> <FORM ACTION="http:// 65.168.115.6 /asp/formtest.asp" METHOD="POST"> Name: <INPUT TYPE="text" NAME="GuestName" MAXLENGTH="30"> <BR> <INPUT TYPE="submit" VALUE="Submit profile"> <INPUT TYPE="reset" VALUE="Reset profile"> </FORM></BODY></HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 91 Sample Form HTML Page © Minder Chen, 1996-2002 HTML & Web Publishing - 92 © Minder Chen, 1996-2002 Server-side script Web Server Web Browser Using Server-Side Script to Process User Inputs via Form HTML & Web Publishing - 93 Form Elements • The Form tag: – <FORM ACTION="URL">… form elements … </FORM> • Form tag attributes: – ACTION – METHOD: • GET: default, fill-out form contents are appended to the URL. • POST: Fill-out form contents are sent to the server in a data body. • Form elements tags: – INPUT tag: specify a simple input element inside a form. – SELECT tag: List box or dropdown list box – TEXTAREA tag: Multiple line text box input © Minder Chen, 1996-2002 HTML & Web Publishing - 94 INPUT Tag • Example: – Last Name: <INPUT TYPE="text" NAME="LastName" SIZE=20> • TYPE – – – – – – – TEXT: Single line text box PASSWORD: Password entry CHECKBOX: Check box RADIO: Radio button HIDDEN: Hidden field sends a variable and a value SUBMIT: Submit button RESET: Reset button • NAME: required for all form elements other than SUBMIT and RESET buttons • VALUE: default value for textbox; label for submit and reset buttons • CHECKED: Apply to Check box and Radio button • SIZE: Size of the Text box. • MAXLENGTH: Maximum number of characters acceptable in a textbox © Minder Chen, 1996-2002 HTML & Web Publishing - 95 Profile.htm: HTML Source <HTML><HEAD><TITLE>Form</TITLE></HEAD><BODY> <H1> Customer Registration </H1> <FORM ACTION="http://65.168.115.6/asp/formtest.asp" METHOD="POST"> Name: <INPUT TYPE="text" NAME="GuestName" MAXLENGTH="30"> <BR> <INPUT TYPE="checkbox" NAME="KnowHTML" VALUE="on" CHECKED>I know HTML <BR> How would you like to receive information from in the future?<BR> <INPUT TYPE="radio" NAME="media" VALUE="em" CHECKED> By Electronic Mail <BR> <INPUT TYPE="radio" NAME="media" VALUE="fx">By Fax<BR> <INPUT TYPE="radio" NAME="media" VALUE="po"> By Postal Mail<BR> © Minder Chen, 1996-2002 HTML & Web Publishing - 96 Continue… Choose Your Favorite Color: <SELECT NAME="Color" SIZE="1"> <OPTION value="B">Blue <OPTION>Red <OPTION value="G" SELECTED>Green <OPTION value="BR">Brown <OPTION value="Y">Yellow</SELECT> <BR> Enter your comment here: <TEXTAREA NAME="comment" ROWS="3"></TEXTAREA><BR> <INPUT TYPE="submit" VALUE="Submit profile"> <INPUT TYPE="reset" VALUE="Reset profile"> <br> <INPUT TYPE="image" SRC="slion.gif"> </FORM> </BODY></HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 97 Send Form Data to an E-Mail Account <form method=POST action="mailto:[email protected]?subject=Customer request" ENCTYPE="text/plain"> Name: <input type="text" name="customer"><br> E-mail: <input type="text" name="email"><br> Interests: <input type="text" name="interest"><br> <input type="submit"> </form> Note: Your browser needs to be set up to support email function. Without the ENCTYPE attribute, you will be receiving the following message: customer=Minder+Chen&[email protected]&interest=running+chi-kung+%24 © Minder Chen, 1996-2002 HTML & Web Publishing - 98 HTML Extensions • • • • Client Pull Font size Background color Image-Tiled Background © Minder Chen, 1996-2002 HTML & Web Publishing - 99 Client Pull Using the META Tag Have to be in the Header section <HTML> <HEAD> <TITLE>This is the first slide</TITLE> <META HTTP-EQUIV="REFRESH" CONTENT="4; URL=REFRESH2.HTM"> </HEAD> <BODY> <A HREF="refresh2.html">Next</A></P> <H1>This is the first slide</H1> <P>Hello </P> </BODY></HTML> <META HTTP-EQUIV="REFRESH" CONTENT="4”> Refresh the same page every 4 seconds. © Minder Chen, 1996-2002 HTML & Web Publishing - 100 Preventing a Document From Being Cached • You can prevent a document from being cached by adding the following META tag to the document. <META HTTP-EQUIV="Expires" CONTENT="0"> • Preventing the document from being cached ensures that a fresh copy of the document will always be retrieved from the site, even during the user's current session, regardless of how the user has set the browser's caching options. This is useful if the content of the document changes frequently. © Minder Chen, 1996-2002 HTML & Web Publishing - 101 BGCOLOR <HTML><HEAD> <TITLE>This is the second slide</TITLE> <META HTTP-EQUIV="REFRESH" CONTENT="4; URL=REFRESH3.HTM"> </HEAD> <BODY BGCOLOR=#FFFF00> <P><A HREF="refresh1.html">Previous</A> <A HREF="refresh1.html">Top</A> <A HREF="refresh3.html">Next</A></P> <H1>This is the second slide</H1> <P><FONT size=+2> world! </FONT></P> </BODY></HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 102 RGB Color • • • • • • • Red Green Blue (RGB) Red: #00 No red <---> #FF bright red #000000: White #FFFFFF: Black <body bgcolor="#FFFF00"> <body bgcolor="magenta"> <body bgcolor="blue4"> Netscape only • blue1 (=blue), blue2, blue3, blue4 (from light to dark) • Color related attributes such as BGCOLOR © Minder Chen, 1996-2002 HTML & Web Publishing - 103 Color Name • http://www.lynda.com • Follow the web color link for RGB values of web safe color © Minder Chen, 1996-2002 HTML & Web Publishing - 104 <font> and <basefont> <basefont size=7>This <font size=-1>is <font size=-2>getting <font size=-3>smaller <font size=3>and this is normal. <font color="#FFFF00" face="Arial, Helvetica, sans-serif" size=7>Try me </font> You can increase the <font size=+2> size </font> of the text’s font. • Face: Internet Explorer only • Default basefont size is 3 © Minder Chen, 1996-2002 HTML & Web Publishing - 105 Image-Tiled Background <HTML><HEAD> <TITLE>This is the third slide</TITLE> <BODY BACKGROUND="tile.gif" bgproperties="fixed"> <P><A HREF="refresh2.htm2">Previous</A> <A HREF="refresh1.html">Top</A></P> <H1>This is the third slide</H1> <P><FONT size=7> Minder! </FONT></P> </BODY></HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 106 Format / Page Colors and Properties © Minder Chen, 1996-2002 HTML & Web Publishing - 107 Using Background Color and Table Together http://www.erols.com/aitc/html/bgc.gif <BODY BACKGROUND="bgc.gif"> <TABLE COLS=2 WIDTH="100%" > <TR VALIGN=TOP> <TD WIDTH="120"> 1st column </TD> <TD>2nd column</TD> </TR></TABLE> © Minder Chen, 1996-2002 HTML & Web Publishing - 108 A Simple Example of Frame <HTML><HEAD> <TITLE>The Frame Sampler</TITLE> </HEAD> <frameset cols="20%,80%"> <frame src="a.htm"> <frame src="e.htm" name="e_frame" scrolling=YES> </frameset></html> http://home.netscape.com/assist/net_sites/frames.html © Minder Chen, 1996-2002 HTML & Web Publishing - 109 An Example of Frame © Minder Chen, 1996-2002 HTML & Web Publishing - 110 HTML Code <HTML><HEAD> <TITLE>The Frame Sampler</TITLE> </HEAD> <frameset rows="50%,50%"> <frameset cols="33%,33%,33%"> <frame src="a.htm"> <frame src="b.htm"> <frame src="c.htm"> </frameset> <frameset cols="33%,33%,33%"> <frame src="d.htm"> <frame src="e.htm"> <frame src="f.htm" name="f_frame" scrolling=YES> </frameset> If you want another link to go to this named frame, you </frameset> write the link as: <A HREF="http://www.aitc.com/test.htm" TARGET="f_frame">link</A> © Minder Chen, 1996-2002 HTML & Web Publishing - 111 E.HTM Source <html> <head> <title></title> </head> <body> <h1>E.HTM </h1> <p>This is a test of the Frame. <a HREF="f.htm"> A Link to Frame F in F.HTM </a></p> </body> </html> © Minder Chen, 1996-2002 HTML & Web Publishing - 112 Uses for Frames • The Backward and Forward navigation tools in the web browser don't work under frames. • Elements that the user should always see – – – – Title graphics Copyright notices Control bars Table of contents © Minder Chen, 1996-2002 HTML & Web Publishing - 113 Exercise © Minder Chen, 1996-2002 HTML & Web Publishing - 114 Book.htm <HTML> <HEAD> <TITLE>Book</TITLE> </HEAD> <FRAMESET ROWS="30%,70%"> <FRAME SRC="aitc.htm" SCROLLING="No" NORESIZE> <FRAMESET COLS="38%,62%"> <FRAME SRC="toc.htm" NORESIZE> <FRAME SRC="chap1.htm" NAME="chapter_fr"> </FRAMESET> </FRAMESET> <NOFRAMES> <BODY> <P>You need a browser that supports frame to view this page </BODY> </NOFRAMES> </HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 115 aitc.htm <HTML> <HEAD> <TITLE>AITC Web Site </TITLE> </HEAD> <BODY> <h1>AITC Web Site</h1> </BODY> </HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 116 toc.htm <HTML> <HEAD> <TITLE>Table of Contents </TITLE> </HEAD> <BODY> <UL> <LI> <A HREF="chap1.htm" TARGET="chapter_fr">Chapter 1</A> <LI><A HREF="chap2.htm" TARGET="chapter_fr">Chapter 2</A> <LI><A HREF="chap3.htm" TARGET="chapter_fr">Chapter 3</A> </UL> Use the <P> <BASE target="chapter_fr"> </BODY> in the head section to define default target frame. </HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 117 Chap1.htm <HTML> <HEAD><TITLE>Created With HTML Assistant Pro - 10/2/96</TITLE></HEAD> <BODY> <font size=+2>This is chapter 1</font> <A HREF="chap2.htm">Go to chapter 2</A> <br> <a href="chap2.htm" target="_blank"> Document opens in a new unnamed window </a><br> <a href="chap2.htm" target="_parent"> Document opens in the immediate FRAMESET parent of the current frame. </a><br> <a href="chap2.htm" target="_self"> Document opened in the same frame as the originating link </a><br> <a href="chap2.htm" target="_top"> Document opens in the full original window. </a><br> </BODY> </HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 118 Chap2.htm <HTML> <HEAD> <TITLE>Chapter 2</TITLE> </HEAD> <BODY> <P> This is chapter 2 <P> <A HREF="chap3.htm">Go to chapter 3</A> </BODY></HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 119 <frameset> and </frameset> • This is the main container for a Frame. It has 2 attributes: ROWS and COLS. • A frame document has no <BODY> tag, and no tags that would normally be placed in the BODY can appear before the FRAMESET tag, or the FRAMESET will be ignored. • The FRAMESET tag has a matching end tag, and within the FRAMESET you can only have other nested FRAMESET tags, FRAME tags, or the NOFRAMES tag. • FRAMESET attributes include: – ROWS="row_height_value_list" – COLS="column_width_list" © Minder Chen, 1996-2002 HTML & Web Publishing - 120 <frame> </frame> • • • • Load information independent of other frames Can be given a target name Can resize dynamically This <frame> tag defines a single frame in a frameset. • It has 6 possible attributes: – SRC: The URL of the document to be displayed. – NAME: This is used to assign a name to a frame so that it can be targeted by other links. – MARGINWIDTH: The left and right margin from the boundary of the frame to the document and the value is in pixels. – MARGINHEIGHT: The upper and lower margins – SCROLLING: yes | no | auto – NORESIZE: Make the frame nonresizable. Frames are resizable by default. – FRAMEBORDER: yes | no © Minder Chen, 1996-2002 HTML & Web Publishing - 121 One More Example <frameset rows="66%,33%"> <!--- Divide into 2 rows ---!> <frameset cols="33%,33%,33%"> <!--- Row 1: make 3 columns ----!> <frame src="A.html"> <!--- Column 1: A ---!> <frameset rows="50%,50%"> <!---Column 2: Divide into 2 rows: 1A and 1B---!> <frame src="B.html"> <!--- Column 2: Row 1A: B ---!> <frame src="D.html"> <!--- Column 2: Row 1B: D---!> </frameset> <frameset rows="50%,50%"> <!--- Column 3: Divide into 2 rows: 1A and 1B---!> <frame src="C.html"> <!--- Column 3: Row 1A: C ---!> <frame src="E.html"> <!--- Column 3: Row 1B: E ---!> </frameset> </frameset> <!--- Close up Row 1 ---!> <frameset cols="33%,66%"> <!--- Row 2: make 2 columns ----!> <frame src="F.html"> <!--- Column 1: F ---!> <frame src="G.html"> <!--- Column 2: G ---!> </frameset> </frameset> HTML & Web Publishing - 122 © Minder Chen, 1996-2002 <FRAMESET ROWS="value_list" COLS="value_list"></FRAMESET> • A frame's window space can be divided into rows and columns. • ROWS="value_list": This is a comma separated list of values. These values can be expressed in an absolute number of pixels, as a percentage (between 1 and 100) or as relative scaling values. • Percentage: <FRAMESET ROWS="20%,60%,20%"> • Pixels: <FRAMESET ROWS="100,500,100">; You'll almost certainly want to use these values in combination with other percentage based or relative values. • Relative scaling: <FRAMESET ROWS="50, 2*, *">; This is a mix of fixed and relative values. In this case the first ROW is 50 pixels wide. The other two rows are divide the remaining space. A single "*" means that the frame gets all of the remaining space. When more than one "*" appear, you can give them relative portions of the remaining space. In this case, the second row gets 2/3 of the remaining space and the third row gets 1/3 of the remaining space. © Minder Chen, 1996-2002 HTML & Web Publishing - 123 Setting Up Your Home Page on the Server • Get an account such as [email protected] on the computer where web server is. • Make your directory world-executable (don't forget the trailing space & period) at the system prompt. – chmod a+x . • Create an directory in your account as follows: – mkdir public_html – chmod a+rx public_html • Change into this new directory. – cd public_html • Create an HTML file index.html and make the file world readable: – chmod a+r index.html • index.html is the default file name in a directory • Invoke a WWW browser to see what you have created! • Use URL: http://mason.gmu.edu/~mchen © Minder Chen, 1996-2002 HTML & Web Publishing - 124 File Transfer Protocol: ftp • http://www.ipswitch.com/cgi/download_eval.pl?product=WL-1000 • http://www.ftpplanet.com/ © Minder Chen, 1996-2002 HTML & Web Publishing - 125 © Minder Chen, 1996-2002 HTML & Web Publishing - 126 Free Web Hosting • Start New Sites: You may want to start new sites for different subjects you want to cover. You can then submit your new sites and link the sites together to share the traffic. Here are places where you can get free sites: – Tripod : http://www.tripod.com – Angelfire : http://www.angelfire.com/ – Geocities : http://www.geocities.com/ HTML spell checking: http://www.netmechanic.com/ © Minder Chen, 1996-2002 HTML & Web Publishing - 127 Build Own Web Site Vs. Pay Hosting Service PROS CONS Build Your Own Web Site: . Full control over contents. . Easy to gather information . Set up expenses plus monthly from visitors via forms . You must manage the server. . Larger, dedicated staff required . Ability to choose security tools. . Ability to rent server space connection fee. Pay a Hosting Service: . Less expensive . No system maintenance . Minimal staff requirement . Dependent on Provider for site security and upkeep . Maybe dependent on provider for . © Minder Chen, 1996-2002 content changes. May not be able to implement forms and scripts HTML & Web Publishing - 128 Let Your Web Site Be Known • • • • Key words used in searches of your sites must be present in your top-level home page. Get Listed on the News groups: For general announcement of new websites: comp.infosystems.www.anounce Negotiate Mutual Pointers with sites trying to attract audience similar to your audience. Online Resource: http://www.ftpplanet.com/webmaster/web_promotion.htm • Sites to Help You Submit Your: SiteThese sites will submit your site to many search engines and directories for you. – Bcentral: http://www.BCentral.com – The Promoter: http://www.tila.com/promote/ -- submits to search engines and link pages for free. – Submit-it!: http://submitit.linkexchange.com/ -- submits to more than 400 search engines and link pages. – Submit-it! Free: http://siteowner.linkexchange.com/Free.cfm -- submits to search engines for free. – WebStep 100: http://www.mmgco.com/top100.html -- submits to top web sites for free. – Virtual Stampede: http://www.virtualstampede.com/ – Postmaster: http://www.netcreations.com/postmaster/registration/try.html © Minder Chen, 1996-2002 HTML & Web Publishing - 129 Class Project Solution C:\temp\index.htm AITC Web Site • Company Introduction AITC • Products • How to Contact us • Online HTML Resources Developed by Robert Smith at Advanced IT Consulting contact us by mail at [email protected] profile.htm AITC Introduction AITC is ….. contact.htm product.htm [Home | Intro | Product | Contact] Product Listing ID 100 200 210 Name TV PC XY Price $250 $999 $234 AITC Employees • Minder Chen • Bruce Johnson • Robert Smith Minder Chen 703-334-4566 [Index] Bruce Johnson 703-334-4577 [Index] Guest Book Entry: Name: Know HTML Submit Resume Web Site Home Page Web Page index.htm <html> <head> <title>Advanced IT Consulting</title> </head> <body> <h1>AITC Web Site</h1> <ul> <li><a href="profile.htm">Company Introduction</a> <li><a href="product.htm">Products</a> <li><a href="contact.htm">How to Contact Us</a> <li><a href="resource.htm">Online HTML Resources</a> </ul> Developed by <a href="contact.htm#smith">Robert Smith</a> at <a href="http://www.erols.com/aitc/"> Advanced IT Consulting </a> contact us <a href="mailto:[email protected]">by email </a> at [email protected] </body></html> © Minder Chen, 1996-2002 HTML & Web Publishing - 131 contact.htm <html> <head> <title>AITC Contact Information</title> </head> <body> <a name="top"><a> [ <a href="index.htm">Home</a> | <a href="profile.htm">Profile</a> | <a href="product.htm">Product</a> | <a href="contact.htm">Contact</a> | <a href="resource.htm">Resource</a> ] <h1>AITC Contacts</h1> <ul> <li><a href="#chen">Minder Chen</a> <li><a href="#johnson">Bruce Johnson</a> <li><a href="#smith">Robert Smith</a> </ul> © Minder Chen, 1996-2002 HTML & Web Publishing - 132 contact.htm (continued) <hr width=6> <a name="chen"></a> Minder Chen<br> 703-334-4566<br> [ <a href="#top">Index </a>] <p> <a name="johnson"></a> Bruce Johnson<br> 703-334-4577<br> [ <a href="#top">Index </a>] <p> <a name="smith"></a> Robert Smith<br> 703-334-5555<br> [ <a href="#top">Index </a>] <p><br><br><br><br><br><br><br><br><br><br><br><br> </body> </html> © Minder Chen, 1996-2002 HTML & Web Publishing - 133 In Netscape (Edit / Preferences) • Set up email server © Minder Chen, 1996-2002 HTML & Web Publishing - 134 resource.htm (Graphics examples) <html> <head><title>Online Resource: Graphics</title></head> <body bgcolor="yellow"> <h1>Online Resource</h1> AITC Logo: <img src="http://www.erols.com/aitc/aitc.gif"><br> Logo 1: With Transparency <img src="http://www.erols.com/aitc/aitc1.gif"><br> Logo 2: Without Transparency <img src="http://www.erols.com/aitc/aitc2.gif"><br> Small Lion: <img src="http://www.erols.com/aitc/slion.gif"><br> Big Lion: <img src="http://www.erols.com/aitc/blion.gif"><br> Hot image using a thumb nail image to link to a larger image: <a href="http://www.erols.com/aitc/blion.gif"> <img src="http://www.erols.com/aitc/slion.gif"> </a> </body></html> © Minder Chen, 1996-2002 HTML & Web Publishing - 135 product.htm <html> <head> <title>AITC Contact Information</title> </head> <body> <font size=4> [ <a href="index.htm">Home</a> | <a href="profile.htm">Profile</a> | Product | <a href="contact.htm">Contact</a> | <a href="resource.htm">Resource</a> ] </font> <h1>AITC Product Listing</h1> <table border=2> <tr> <th>ID</th><th width=100>Name</th> <th align= right width=80> Price</th> </tr> <tr> <td>100</td> <td>TV</td> <td align= right >$250</td> </tr> <tr> <td>200</td> <td>PC</td> <td align= right >$999</td> </tr> <tr> <td>210</td> <td>XY</td> <td align= right >$234</td> </tr> </table> </body> </html> © Minder Chen, 1996-2002 HTML & Web Publishing - 136 profile.htm <html> <head> <title>AITC Company Profile </title> </head> <body> <h1>AITC Introduction</h1> AITC is IT consulting and training firm. ... <p> Guest Book Entry: <hr> <form method="POST" action=" http://hoohoo.ncsa.uiuc.edu/cgi-bin/post-query "> Name: <input type="text" name="guestname"><br> <input type="checkbox" name="html" CHECK> Know HTML <br> <input type="submit"> <input type="reset" value="Resume"> </form> <hr> </body> </html> © Minder Chen, 1996-2002 HTML & Web Publishing - 137 table.htm (background Image) <HTML> <HEAD> <META HTTP-EQUIV="Content-Type" CONTENT="text/html; charset=iso-8859-1"> <META NAME="Author" CONTENT="Minder Chen"> <META NAME="GENERATOR" CONTENT="Mozilla/4.03 [en] (Win95; I) [Netscape]"> <TITLE>Tables and Background Color</TITLE> </HEAD> <BODY BACKGROUND="bgc.gif"> <H1>Two Column Format and Background Color</H1> <TABLE CELLPADDING=0 COLS=2 WIDTH="100%" > <TR VALIGN=TOP> <TD WIDTH="120"> <UL> <LI><A HREF="profile.htm">Profile</A></LI> <LI><A HREF="contact.htm">Contact</A></LI> <LI><A HREF="product.htm">Products</A></LI> <LI><A HREF="resource.htm">Online Resource</A></LI> </UL> </TD> <TD><IMG SRC="logo.gif" HEIGHT=73 WIDTH=183> <B>Advanced IT Consulting is a consulting firm specialized in training and consulting in emerging IT. </B> </TD> </TR></TABLE></BODY></HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 138 Imagemap • ISMAP: The ISMAP (is map) attribute identifies an image as an image map. Image maps are graphics in which certain regions are mapped to URLs. By clicking on different regions, different resources can be accessed from the same graphic. Example of use: • <A HREF="book1.map"> <IMG SRC="sample.gif" ISMAP> </A> • To be able to use image maps in HTML documents, the HTTP server which will be controlling document access must have the correct cgi-bin software installed to control image map behavior. • Files needed: – "Map" image: sample.gif in the example. – Map file: e.g., book1.map in the example. Has two formats: NCSA and CERN and you can use MapEdit or MAP This to create it. – Imagemap CGI program on the web server © Minder Chen, 1996-2002 HTML & Web Publishing - 139 Map File: CERN and NCSA map_cern.map default map_dflt.htm #The rectangle at the bottom rect (1,122) (129,163) rect.htm #The circle at the middle circle (60,85) 35 circle.htm #Polygon at the top poly (56,1) (8,50) (104,50) polygon.htm map_NCSA.map default map_dflt.htm #The rectangle at the bottom rect rect.htm 1,122 129,163 #The circle at the middle circle circle.htm 60,85 88,106 #Polygon at the top poly polygon.htm 56,1 8,50 104,50 © Minder Chen, 1996-2002 HTML & Web Publishing - 140 Map THIS Where to get it: http://www6.zdnet.com/cgi-bin/texis/swlib/hotfiles/info.html?fcode=0007SG © Minder Chen, 1996-2002 HTML & Web Publishing - 141 Save the Map File CSIM: Client Side Image Map © Minder Chen, 1996-2002 HTML & Web Publishing - 142 Limitations of Image Maps • Image maps only work over the HTTP protocol. • A server transaction is always required. • The implementation of image maps is server-dependent. © Minder Chen, 1996-2002 HTML & Web Publishing - 143 Area Coordination Specifications <map name="map_spec"> <area shape=circle coords="50,50,20" href="circle_link.html"> <area shape=rectangle coords="70,70, 90,90" href="rect_link.html"> <area shape=polygon coords="10,10,10,20,15,20" href="rect_link.html"> </map> (0,0) y x • Use noref attribute in the <area> tag to indicate no action should be taken. • Must include an href or a noref attribute for each <area> tag. (100,100) © Minder Chen, 1996-2002 HTML & Web Publishing - 144 Sample Map Specification <HTML> <HEAD> <TITLE>Client-Side Image Map</TITLE> </HEAD> <BODY> <h1>Try out the following client-side image map</h1> <p> <img src="map1.gif" usemap="#map_spec"> <map name="map_spec"> <area shape=polygon coords="8,50, 56,1, 104,50" href="polygon.htm"> <area shape=circle coords="60, 85, 35" href="circle.htm"> <area shape=rectangle coords="1,122,129,163" href="rect.htm"> <area shape=rectangle coords="0,0,129,163" href="default.htm"> </map> </BODY> </HTML> © Minder Chen, 1996-2002 HTML & Web Publishing - 145 Including Both Client-Side and Server-Side Processing • Netscape 2.0+ and Internet Explore support client-side image map. Other browsers may ignore the usemap attribute in the <img> tag. • For the same image map, we can include both client-side (honored by the browsers that can handle it) and serverside processing (for backward compatibility). <a href="/cgi-bin/imagemap/pics/bart.map"> <img src="/pics/bart3.gif" usemap="#map2" ismap ></a> <map name="map2"> <area shape=circle coords=…> <area shape=polygon coords=…> </map> © Minder Chen, 1996-2002 HTML & Web Publishing - 146 Advanced Table Tags <body bgcolor="blue" text="yellow" link="white" vlink="black" alink="red"> <table border=1 width="475"> <colgroup span="2" with="50"></colgroup> <colgroup align="right"> <col span="1" width="75"><col span="2" width="50"><col span="1" width="200"> </colgroup> <thead> <th>PID</th><th>Price</th><th>Type</th><th>Footage</th><th>BR/FB/HB</th><th>Address</th> </thead> <tfoot> <th>PID</th><th>Price</th><th>Type</th><th>Footage</th><th>BR/FB/HB</th><th>Address</th> </tfoot> <tbody> <tr><td>1</td><td>$400,000</td><td>TH</td> <td>8,000</td><td>3/2/1</td><td>123 Main St.</td></tr> <tr><td>2</td><td>$350,000</td><td>SFH</td> <td>8,000</td><td>4/2/2</td><td>777 Main St.</td></tr> </tbody> </table> Contact <a href="http://www.erols.com/aitc/ger.htm">GE Reality</a> if you want to buy a house.<br> Contact <a href="http://www.microsoft.com/">Microsoft</a> if you have problem with IE. </body> © Minder Chen, 1996-2002 HTML & Web Publishing - 147 Web User Interface Design • • • • • • Web Style Guide: Basic Design Principles for Creating Web Sites, Yale University Press, March of 1999 – http://info.med.yale.edu/caim/manual/ Designing Web Usability, Jacob Nielsen, New Riders Publishing, Dec. 1999. David Siegel, Creating Killer Web Sites, Second Edition – http://www.killersites.com/core.html Collaborative Web Development: Strategies and Best Practices for Web Teams, by Jessica R. Burdman, Addison-Wesley, 1999. Jakob Nielsen on web user interface design – http://www.useit.com/ and http://www.useit.com/alertbox/ – http://www.sun.com/sun-on-net/uidesign/ Designing Web Graphics.3 by Lynda Weinman, New Rider, 1999 – Lynda's web site at http://www.lynda.com/ • • • • • Norman and Nielsen Group at http://www.nngroup.com/ Webmonkey design site_building at http://www.hotwired.com/webmonkey/design/site_building/ Web Workshop - Electronic Commerce Site Design at http://msdn.microsoft.com/workshop/design/layout/site021599.asp IBM Ease of Use Web Site: http://www-3.ibm.com/ibm/easy/eou_ext.nsf/publish/561 Accessibility standards: www.access-board.gov/508.htm & www.cast.org/babby www.section508.gov © Minder Chen, 1996-2002 HTML & Web Publishing - 148 URL and Security • URLs are standardized in RFC1738, and in their most generic form, they are defined as • <scheme>:<scheme-specific-part> • The best-known scheme is the Common Internet (http for WWW), in which the <scheme> is the name of a protocol and the <scheme-specific-part> is defined as: • //<user>:<password>@ <host>:<port>/<url-path> in which only the host part is mandatory. – The ":" and "@" characters have a special meaning and thus the server can parse the entire string. – If a user and a password are provided, the host part only comes after the @ character. • http://www.microsoft.com:[email protected]/pub/mskb/Q209354.asp © Minder Chen, 1996-2002 HTML & Web Publishing - 149