This example presents a multi-column table of text as a single column. Frames Frames can also be a problem. Users with small screens may not see much data other than frame dividers, and some screen readers do not identify each screen as a separate window. Lists Lists of lists can also be difficult to interpret since indentation is often the only clue as to where in the hierarchy an item falls. Since long documents can be hard to navigate or perceive an overview of, JavaScripts could be used to create page navigation aids or summaries of a page.
Examples are still under development.
These updates often rewrite the current HTML page and then redisplay it. Therefore, following the guidelines for Designing More Usable Web Pages are one step towards avoiding creating an inaccessible page with JavaScript. Trigger events with active input from users rather than nonactive triggers. An active trigger is a mouse click, selection of an option in a list, or a key press. Nonactive triggers are activated when a page is loaded, after a certain amount of time has expired, or when the mouse passes over an object.