How can I change the background of a parent <div> when an <input> or <a> is :focus'd (or any other dynamic pseudo-class?
Eg
<div id="formspace">
<form>
<label for="question">
How do I select #formspace for the case when a child is active?</label>
<input type="text" id="question" name="answer"/></form></div>
Unfortunately css doesn't support parent selectors. :(
So the only way to do it is to use javascript like the jQuery parent method.
Update: CSS Selectors Level 4 will support parent selectors! http://www.w3.org/TR/selectors4/#subject
The only way I can think of is with JavaSCript:
function focusLink(isOnFocus)
{
if (isOnFocus)
document.getElementById('formspace').className = "<make a focus class name here>";
else
document.getElementById('formspace').className = "<default class name here>";
}
...
<input onFocus="focusLink(true)" onBlur="focusLink(false)">
Hope that helps!