Lab 20 Making web pages accessible

Accessibility Extension

List of Accessibility Issues Summary

FAE Rule	Violations	Message	Class
Check	1	Heading content should be concise (usually 65 or fewer characters in length).	Headings
Fail	1	Each img element should have alt text.	Images
Fail	1	Two or more levels of nesting. Use CSS properties instead of tables and nested tables to visually layout blocks of related content for graphical renderings.	Tables
Fail	2	Every frame element must have a title attribute with content that describes the purpose of the frame.	Frames
Fail	3	The font and center elements must not be used for text styling, instead use structural markup should be used with CSS for styling.	Text Styling
Fail	6	Each page must have a lang attribute on its html element whose value or initial subtag is a valid two-character language code.	Language Changes
Warn	1	The words contained in each h1 element should match a subset of the words contained in the title element. Words (%1) in h1 elements should also be in the title element.	Title
Warn	1	Every img element that is less than 8 pixels high or 8 pixels wide OR has an empty alt attribute value should be removed and CSS techniques should be used for styling content.	Images
Warn	1	One level of nesting. Use CSS properties instead of tables and nested tables to visually layout blocks of related content for graphical renderings.	Tables
Warn	1	The character encoding was not specified.	W3C Specifications
Warn	2	Each map, ul or ol element that precedes the last h1 element and appears to be a navigation bar should be immediately preceded by a heading element, preferably an h2.	Menu and Navigation Bars
Warn	2	Hidden or empty frames should not be used.	Frames
Warn	2	Every onClick event handler should be on a focusable element.	Events
Warn	4	If the content of the alt attribute is not empty it should contain at least 7 characters and less than 90 characters. The text should provide people who cannot see the image orientation to the content and purpose of the image in the website.	Images
Warn	7	Ensure that links that point to the same HREF use the same link text.	Links
Warn	16	Avoid using text links that are shorter than four 4 characters in length.	Links

Date: 5/6/2013 21:11 PM
URL: http://s9844108.blogspot.tw/2012/05/lab-23-making-web-pages-accessible.html