Generally the safest way to ensure real humans enter data are so called captchas (Completely Automated Public Turing-Test to tell Computers and Humans Apart – distorted pictures with words in them you are asked to read and type in). Now, these are not only an accessibility issue (how would a blind user type them in?), but clever spammers found a way around them, using free porn and gullible people.
A new article describes how to create dynamic galleries with DOM and CSS. Read the devarticles.com version, or if you dislike ads, the local copy.
With all my accessibility studies and teachings at work, I thought it’ll be a good idea to do something for charity, and what better than to sponsor a puppy to become a guide dog?
I filled out the forms and here he is:
Varley, my very own soon to be guide dog. I hope when he is out of school, he’ll be very helpful to somebody who needs him.
The mini mac is scarcely out to the public, and already people try to turn it into a PC.
A lot of people cherish the pure CSS popups technique published by Eric Meyer in the long long ago.
The only problem with these is that they are not accessible. While screen readers and browsers without CSS happily display the texts, users without a mouse have no chance to get to the content of the spans embedded in the links.
What we can do though is use Javascript to check if a mouse is available, and make our CSS dependent on a class set to the body if that is the case:
CSS:
body.mouseenabled a span{
position:absolute;
left:-999em;
}
body.mouseenabled a:hover{
color:#fff;
}
body.mouseenabled a:hover span{
position:relative;
left:0;
}
Javascript
window.onload=function()
{
if(!document.getElementById || !document.createElement){return;}
document.body.onmousemove=function()
{
if(!/bmouseenabledb/.test(document.body.className))
{
this.className+=this.className?' mouseenabled':'mousenabled';
}
}
}
Benefits:
Drawbacks: