Controlling The Browser , Validating Forms

• Display messages in the status line
• Navigation with drop downs, dynamic windows (www.fastcompany.com)
• Prompt boxes, popup windows (color tables)
• Graphics: mouse-overs, moving images, cached images (www.53.com)
• But, complex animations are best handled with Java, Flash, and other similar software.
• Pre-loading images with JavaScript saves time.
• Form validation (www.ecampus.com)
• Catch the error early.
• Parse entered data for validity: credit card numbers, e-mail addresses, phone numbers, etc.
• Use this to complement, but not replace CGI.  Remember, JavaScript can be disabled.
• Subtotals
• Keep a running total without having to refresh the page.  (www.ecampus.com)