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Link	rowid ▼	title	contents	year	author	author_slug	published	url	topic
188	188	Don't Lose Your :focus	For many web designers, accessibility conjures up images of blind users with screenreaders, and the difficulties in making sites accessible to this particular audience. Of course, accessibility covers a wide range of situations that go beyond the extreme example of screenreader users. And while it’s true that making a complex site accessible can often be a daunting prospect, there are also many small things that don’t take anything more than a bit of judicious planning, are very easy to test (without having to buy expensive assistive technology), and can make all the difference to certain user groups. In this short article we’ll focus on keyboard accessibility and how careless use of CSS can potentially make your sites completely unusable. Keyboard Access Users who for whatever reason can’t use a mouse will employ a keyboard (or keyboard-like custom interface) to navigate around web pages. By default, they will use TAB and SHIFT + TAB to move from one focusable element (links, form controls and area) of a page to the next. Note: in OS X, you’ll first need to turn on full keyboard access under System Preferences > Keyboard and Mouse > Keyboard Shortcuts. Safari under Windows needs to have the option Press Tab to highlight each item on a webpage in Preferences > Advanced enabled. Opera is the odd one out, as it has a variety of keyboard navigation options – the most relevant here being spatial navigation via Shift+Down, Shift+Up, Shift+Left, and Shift+Right). But I Don’t Like Your Dotted Lines… To show users where they are within a page, browsers place an outline around the element that currently has focus. The “problem” with these default outlines is that some browsers (Internet Explorer and Firefox) also display them when a user clicks on a focusable element with the mouse. Particularly on sites that make extensive use of image replacement on links with “off left” techniques this can create very unsightly outlines that stretch from the replaced element all the way to the left edge of the browser. Outline …	2009	Patrick Lauke	patricklauke	2009-12-09T00:00:00+00:00	https://24ways.org/2009/dont-lose-your-focus/	code
331	331	Splintered Striper	Back in March 2004, David F. Miller demonstrated a little bit of DOM scripting magic in his A List Apart article Zebra Tables. His script programmatically adds two alternating CSS background colours to table rows, making them more readable and visually pleasing, while saving the document author the tedious task of manually assigning the styling to large static data tables. Although David’s original script performs its duty well, it is nonetheless very specific and limited in its application. It only: works on a single table, identified by its id, with at least a single tbody section assigns a background colour allows two colours for odd and even rows acts on data cells, rather than rows, and then only if they have no class or background colour already defined Taking it further In a recent project I found myself needing to apply a striped effect to a medium sized unordered list. Instead of simply modifying the Zebra Tables code for this particular case, I decided to completely recode the script to make it more generic. Being more general purpose, the function in my splintered striper experiment is necessarily more complex. Where the original script only expected a single parameter (the id of the target table), the new function is called as follows: striper('[parent element tag]','[parent element class or null]','[child element tag]','[comma separated list of classes]') This new, fairly self-explanatory function: targets any type of parent element (and, if specified, only those with a certain class) assigns two or more classes (rather than just two background colours) to the child elements inside the parent preserves any existing classes already assigned to the child elements See it in action View the demonstration page for three usage examples. For simplicity’s sake, we’re making the calls to the striper function from the body’s onload attribute. In a real deployment situation, we would look at attaching a behaviour to the onload programmatically — just remember that, as we need to pass varia…	2005	Patrick Lauke	patricklauke	2005-12-15T00:00:00+00:00	https://24ways.org/2005/splintered-striper/	code

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