page 404~413 
in the text

Web pages made with Javascript will show up in Netscape and I.E.
Internet Explorer uses a variation of Javascript called JScript.

It Doesn't always work !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Just like some HTML commands show up in Netscape and not in I.E.
- also some Javascript commands show up in Netscape, but not in I.E.
- and some JScript commands show up in I.E., but not in Netscape

the code for this is

<applet CODE="link.class" WIDTH="290" HEIGHT="38">
<param NAME="target" VALUE="_top">
<param NAME="number" VALUE="9">
<param NAME="link0" VALUE="Internet and HTML Navigation links\\no link">
<param NAME="link1" VALUE="BCS500a\\http://www..........htm">
<param NAME="link2" VALUE="BCS500b\\http://www.witiger.com/senecacollege/BCS500/outline500b.htm">
<param NAME="link3" VALUE="Section Three\\http://www.........htm">
<param NAME="link4" VALUE="Detailed Course Outline, Section Four\\http://www......htm">
<param NAME="link5" VALUE="Grading Details\\http://www...../grading234.htm">
<param NAME="link6" VALUE="COMP 234 splash page\\http://www.....COMP234.htm">
<param NAME="link7" VALUE="The Web Site from the text publisher\\http://..../index.html">
<param NAME="link8" VALUE="BCS500 \\http://www.witiger.com/senecacollege/BCS500/outline500a.htm">
<param NAME="link9" VALUE="COMP 234 MAIN PAGE for the course\\http://www.sob.cencol.on.ca/is234/comp234.htm">
</applet>

To help you find the class files - to many of the common effects used in past classes - we have listed them in a sub-directory on witiger.com - click on the screen capture to the left

1. copy the code into your page (use notepad, or HoTMeTaL 6.0)
2. create some words in a file and save it as XXX.txt
3. load that text file on to your server in the same directory as the page on which the applet will be
4. you need to obtain a copy of "txtscroll.jar" and "txtscroll.class" files
  do this by "right button" clicking these
 www.witiger.com/senecacollege/BCS500/txtscroll.class 
 www.witiger.com/senecacollege/BCS500/txtscroll.jar 
5. then you need to also load those files on to your server in the same directory as the page on which the applet will be

see  http://jsguide.simplenet.com/tips.html
The normal HTML code for a hyperlink might be something like this: 

                   <A HREF="mylink.htm">Click here</A> 

To display something on the status bar when the mouse is moved over this link,  you need to add a little more: 

                   <A HREF="mylink.htm" onMouseOver="window.status='Click
                   here to know more about me'; return true;"
                   onMouseOut="window.status=''; ">Click here</A> 

Special Effects
- one of the things you can do on a page which really bugs people !!!, is to have a flickering effect when the page loads - essentially this is just a rapid alternating of the background colours. To see what it looks like, and to get the Javascript to do it, 
go here (seen best in I.E.)

Java 
and 
JavaScript
- differences
 
 
 
 
 
 
 
 
 

Java 
and 
JavaScript
- differences
 

JavaScript compared to Java

JavaScript	Java
Interpreted (not compiled) by client.	Compiled bytecodes downloaded from server, executed on client.
Object-based. No distinction between types of objects. Inheritance is through the prototype mechanism and properties and methods can be added to any object dynamically.	Object-oriented. Objects are divided into classes and instances with all inheritance through the class hieararchy. Classes and instances cannot have properties or methods added dynamically.
Code integrated with, and embedded in, HTML.	Applets distinct from HTML (accessed from HTML pages).
Variable data types not declared (loose typing).	Variable data types must be declared (strong typing).
Dynamic binding. Object references checked at runtime.	Static binding. Object references must exist at compile-time.
Cannot automatically write to hard disk.	Cannot automatically write to hard disk.

JavaScript
 

Javascript was created by Netscape. JavaScript is Netscape's cross-platform, object-based scripting language for client and server applications.It is a scripting language that you can use to write programs to include in your HTML pages (page 387 Keith Roberts)

Explanation of how JavaScript came to be. JavaScript is sometimes considered a subset of the programming language Java - but this isn't true. As Sun was working on defining Java, Netscape was creating a scripting language for their LiveWire product called LiveScript. Java got released first. Netscape realized that LiveScript would be useful as a way to interface with Java and contacted Sun with the idea. Sun helped Netscape rework LiveScript and called it JavaScript. Although it does have some syntax that's similar to Java, JavaScript is not a derivative of Java. 

Link to page on Netscape's site that has many other links to Java related information and description 
 http://developer.netscape.com/docs/manuals/index.
html?content=javascript.html

There are two types of JavaScript: 
     Navigator JavaScript, also called client-side JavaScript 
     LiveWire JavaScript, also called server-side JavaScript 

Embedding JavaScript in HTML 

To inset JavaScript within a Web page, the <SCRIPT> tag should be used. It is a container tag so it should be closed with </SCRIPT> 

VBScript - there are other scripting languages besides JavaScript. VBScript also comes from Microsoft 

examples of VBScript can be seen at
 http://msdn.microsoft.com/scripting/default.htm?/scripting/vbscript/samples/vbssamp.htm