By Katie Cunningham
Get useful directions for making your web site available to individuals with disabilities. With this instruction manual, you will layout or strengthen a domain that conforms to part 508 of the USA Rehabilitation Act - and within the method you will discover find out how to supply a greater consumer adventure for everybody. The Accessibility instruction manual introduces you to a number of audiences that experience hassle utilizing latest advanced web pages, together with individuals with blindness, listening to loss, actual disabilities, and cognitive problems. the way to help assistive applied sciences, and comprehend which fonts, shades, web page layouts, and different layout components paintings most sensible - with no need to exclude complex features, lease outdoors aid, or considerably raise overhead.
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Additional resources for Accessibility Handbook: Making 508 Compliant Websites
Most users are multitasking while on their computer, and naturally drift off to other activities while waiting for someone to respond to them. A user with audio might listen for an alert sound to know that someone has responded to them. How would someone without audio tell that something has happened? In Figures 3-4 through 3-6, a tab in a browser changes color when something has happened that requires the user’s attention. Figure 3-4. Chat, with no alert Figure 3-5. info Figure 3-6. An alert in the browser tab Unlike videos, if a feature has ambient sounds or background music, these can be safely ignored.
S. statistics are used throughout this chapter. Collecting statistics on a global basis are difficult, since some cultures don’t collect data on it, others have high prevalence, and others have extremely low prevalence. info Type Colors that appear similar % of population affected Deuteranomaly Greens are muted. 4% of females Tritanomaly Blue and yellow. 01% of the population Color blindness not only prevents the user from seeing certain colors, but can alter how two colors contrast each other (Figure 2-5).
The first step to having an accessible Flash object on a page is determining if it would be better to provide an alternative page for screen readers. For example, if the Flash object is a slide presentation, perhaps the content can simply be offered on another page in a plainer format (see Figure 1-11). The user will likely not care about the slide transitions and the pauses while they execute might be annoying. One place to avoid Flash is in the navigation. Not only should navigation remain unobtrusive for basic usability principles, but if the user doesn’t have Flash, he might not be able to use the site at all!