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modernizr media query testing and hair pulling
window.matchMedia = window.matchMedia || (function(doc, undefined){
var bool,
docElem = doc.documentElement,
refNode = docElem.firstElementChild || docElem.firstChild,
// fakeBody required for <FF4 when executed in <head>
fakeBody = doc.createElement('body'),
div = doc.createElement('div');
div.id = 'mq-test-1';
div.style.cssText = "position:absolute;top:-100em";
fakeBody.style.background = "none";
fakeBody.appendChild(div);
return function(q){
div.innerHTML = '&shy;<style media="'+q+'"> #mq-test-1 { width: 42px; }</style>';
docElem.insertBefore(fakeBody, refNode);
bool = div.offsetWidth == 42;
docElem.removeChild(fakeBody);
return { matches: bool, media: q };
};
})(document);
testMediaQuery = function( mq ) {
var matchMedia = window.matchMedia || window.msMatchMedia;
if ( matchMedia ) {
return matchMedia(mq).matches;
}
var bool;
injectElementWithStyles('@media ' + mq + ' { #' + mod + ' { position: absolute; } }', function( node ) {
bool = (window.getComputedStyle ?
getComputedStyle(node, null) :
node.currentStyle)['position'] == 'absolute';
});
return bool;
}
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