DHTML stands for Dynamic Hyper Text Markup Language. Dynamic HTML, a mixture of standards including HTML, style sheets, the Document Object Model and scripting. However, there is no World Wide Web Consortium specification that formally defines DHTML. In addition, we cover the following topics:

Chapter 1: Introduction to DHTML

• DHTML Defined
• The Real World of DHTML

Chapter 2: Strings

• Concatenating (Joining) Strings
• Accessing Substrings
• Changing String Case
• Testing Equality of Two Strings
• Testing String Containment Without Regular Expressions
• Testing String Containment with Regular Expressions
• Searching and Replacing Substrings
• Using Special and Escaped Characters
• Reading and Writing Strings for Cookies
• Converting Between Unicode Values and String Characters
• Encoding and Decoding URL Strings
• Encoding and Decoding Base64 Strings

Chapter 3: Numbers and Dates

• Converting Between Numbers and Strings
• Testing a Number's Validity
• Testing Numeric Equality
• Rounding Floating-Point Numbers
• Formatting Numbers for Text Display
• Converting Between Decimal and Hexadecimal Numbers
• Generating Pseudorandom Numbers
• Calculating Trigonometric Functions
• Creating a Date Object
• Calculating a Previous or Future Date
• Calculating the Number of Days Between Two Dates
• Validating a Date

Chapter 4: Arrays and Objects

• Creating a Simple Array
• Creating a Multidimensional Array
• Converting Between Arrays and Strings
• Doing Something with the Items in an Array
• Sorting a Simple Array
• Combining Arrays
• Dividing Arrays
• Creating a Custom Object
• Simulating a Hash Table for Fast Array Lookup
• Doing Something with a Property of an Object
• Sorting an Array of Objects
• Customizing an Object's Prototype
• Converting Arrays and Custom Objects to Strings

Chapter 5: Variables, Functions, and Flow Control

• Creating a JavaScript Variable
• Creating a Named Function
• Nesting Named Functions
• Creating an Anonymous Function
• Delaying a Function Call
• Branching Execution Based on Conditions
• Handling Script Errors Gracefully
• Improving Script Performance

Chapter 6: Browser Feature Detection

• Detecting the Browser Brand
• Detecting an Early Browser Version
• Detecting the Internet Explorer Version
• Detecting the Netscape Navigator Version
• Detecting the Client Operating System
• Detecting Object Support
• Detecting Object Property and Method Support
• Detecting the Browser Written Language
• Detecting Cookie Availability
• Defining Browser- or Feature-Specific Links
• Testing on Multiple Browser Versions

Chapter 7: Managing Browser Windows

• Setting the Main Window's Size
• Positioning the Main Window
• Maximizing the Main Window
• Creating a New Window
• Bringing a Window to the Front
• Communicating with a New Window
• Communicating Back to the Main Window
• Using Internet Explorer Modal/Modeless Windows
• Simulating a Cross-Browser Modal Dialog Window
• Simulating a Window with Layers

Chapter 8: Managing Multiple Frames

• Creating a Blank Frame in a New Frameset
• Changing the Content of One Frame from Another
• Changing the Content of Multiple Frames at Once
• Replacing a Frameset with a Single Page
• Avoiding Being "Framed" by Another Site
• Assuring a Page Loads in its Frameset
• Reading a Frame's Dimensions
• Resizing Frames
• Setting Frameset Specifications Dynamically

Chapter 9: Dynamic Forms

• Auto-Focusing the First Text Field
• Performing Common Text Field Validations
• Preventing Form Submission upon Validation Failure
• Auto-Focusing an Invalid Text Field Entry
• Changing a Form's Action
• Blocking Submissions from the Enter Key
• Advancing Text Field Focus with the Enter Key
• Submitting a Form by an Enter Key Press in Any Text Box
• Disabling Form Controls
• Hiding and Showing Form Controls
• Allowing Only Numbers (or Letters) in a Text Box
• Auto-Tabbing for Fixed-Length Text Boxes
• Changing select Element Content
• Copying Form Data Between Pages

Chapter 10: Managing Events

• Equalizing the IE and W3C Event Models
• Initiating a Process After the Page Loads
• Determining the Coordinates of a Click Event
• Preventing an Event from Performing Its Default Behavior
• Blocking Double Clicks
• Determining Which Element Received an Event
• Determining Which Mouse Button Was Pressed
• Reading Which Character Key Was Typed
• Reading Which Noncharacter Key Was Pressed
• Determining Which Modifier Keys Were Pressed During an Event
• Determining the Element the Cursor Rolled From/To
• Synchronizing Sounds to Events

Chapter 11: Page Navigation Techniques

• Loading a New Page or Anchor
• Keeping a Page Out of the Browser History
• Using a select Element for Navigation
• Passing Data Between Pages Via Cookies
• Passing Data Between Pages Via Frames
• Passing Data Between Pages Via URLs
• Creating a Contextual (Right-Click) Menu
• Creating Drop-Down Navigation Menus
• Providing Navigation Trail Menus
• Creating Expandable Menus
• Creating Collapsible XML Menus

Chapter 12: Managing Style Sheets

• Assigning Style Sheet Rules to an Element Globally
• Assigning Style Sheet Rules to a Subgroup of Elements
• Assigning Style Sheet Rules to an Individual Element
• Importing External Style Sheets
• Importing Browser- or Operating System-Specific Style Sheets
• Changing Imported Style Sheets After Loading
• Enabling/Disabling Style Sheets
• Toggling Between Style Sheets for an Element
• Overriding a Style Sheet Rule
• Turning Arbitrary Content into a Styled Element
• Creating Center-Aligned Body Elements
• Reading Effective Style Sheet Property Values
• Forcing Version 6 Browsers into Standards-Compatibility Mode

Chapter 13: Visual Effects for Stationary Content

• Precaching Images
• Swapping Images (Rollovers)
• Changing Text Style Properties
• Offering Body Text Size Choices to Users
• Creating Custom Link Styles
• Changing Page Background Colors and Images
• Hiding and Showing Elements
• Adjusting Element Transparency
• Creating Transition Visual Effects

Chapter 14: Positioning HTML Elements

• Making an Element Positionable in the Document Space
• Connecting a Positioned Element to a Body Element
• Controlling Positioning Via a DHTML JavaScript Library
• Deciding Between div and span Containers
• Adjusting Positioned Element Stacking Order (z-order)
• Centering an Element on Top of Another Element
• Centering an Element in a Window or Frame
• Determining the Location of a Nonpositioned Element
• Animating Straight-Line Element Paths
• Animating Circular Element Paths
• Creating a Draggable Element
• Scrolling div Content
• Creating a Custom Scrollbar

Chapter 15: Creating Dynamic Content

• Writing Dynamic Content During Page Loading
• Creating New Page Content Dynamically
• Including External HTML Content
• Embedding XML Data
• Embedding Data as JavaScript Objects
• Transforming XML Data into HTML Tables
• Transforming JavaScript Objects into HTML Table
• Converting an XML Node Tree to JavaScript Objects
• Creating a New Element
• Creating Text Content for a New Element
• Creating Mixed Element and Text Nodes
• Inserting and Populating an iframe Element
• Getting a Reference to an HTML Element Object
• Replacing Portions of Body Content
• Removing Body Content
• Sorting Dynamic Tables
• Walking the Document Node Tree
• Capturing Document Content

Chapter 16: Dynamic Content Applications

• Displaying a Random Aphorism
• Converting a User Selection into an Arbitrary Element
• Automating the Search-and-Replace of Body Content
• Creating a Slide Show
• Auto-Scrolling the Page
• Greeting Users with Their Time of Day
• Displaying the Number of Days Before Christmas
• Displaying a Countdown Timer
• Creating a Calendar Date Picker
• Displaying an Animated Progress Bar

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