1. Internet Browsers and Add-ons Popular browsers Browser stats (shown in talk) What a browser does Javascript (shown in talk) * Add-ons * Also see an explanation and examples of HTML code in Past Meeting Notes for 2010_02

2. Popular Browsers Firefox – from Mozilla Chrome – from Google Internet Explorer – from Microsoft Safari – from Apple Opera – from Opera Software Firefox and Chrome are rapidly becoming more popular than IE

3. What does an Internet Browser do? 1. It goes to a computer at an address that you specify and retrieves a particular file of text  You provide the address, e.g. www.google.co.uk, and the filename is often assumed, e.g. index.htmlwww.google.co.uk  The addressed computer is a Web Server 2. Displays the contents of this text file; this is a Web Page 3. Executes the embedded commands 4. Some common commands are: 1. Enhance the text, e.g. bold, italics 2. Display a picture 3. Give the user a place to select an alternative file to display, replacing the current one; this is a Hyperlink 4. Execute a Javascript program

4. Browser Add-ons These are small programs that you choose to install inside your browser (therefore making it bigger)  Similar to Apps on smartphones They add useful automation to some of the interactive work you do with a browser, e.g. shopping For example:  Fill in a form with your name & address  Check your spelling  Translate from a foreign language  Provide control over Javascript programs

5. Some useful add-ons Firefox  Autofill Forms  British English Dictionary  ImTranslator  NoScript Go to 'Tools/Add-ons' and Search for the above Internet Explorer Google Toolbar Browse to: toolbar.google.com (this takes you to: www.google.com/intl/en-GB/toolbar/ie/index.html)

6. Advice from Microsoft http://windows.microsoft.com/en-US/windows-vista/How-do-browser-add-ons-affect-my-computer windows.microsoft.com/en-US /windows-vista/How-do-browser-add-ons-affect-my- computer