chamilo-lms2/app/Resources/public/assets/modernizr/feature-detects/css-backgroundposition-xy.js

/*
	Allan Lei https://github.com/allanlei
	
	Check adapted from https://github.com/brandonaaron/jquery-cssHooks/blob/master/bgpos.js
	
	Test: http://jsfiddle.net/allanlei/R8AYS/
*/
Modernizr.addTest('bgpositionxy', function() {
    return Modernizr.testStyles('#modernizr {background-position: 3px 5px;}', function(elem) {
        var cssStyleDeclaration = window.getComputedStyle ? getComputedStyle(elem, null) : elem.currentStyle;
        var xSupport = (cssStyleDeclaration.backgroundPositionX == '3px') || (cssStyleDeclaration['background-position-x'] == '3px');
        var ySupport = (cssStyleDeclaration.backgroundPositionY == '5px') || (cssStyleDeclaration['background-position-y'] == '5px');
        return xSupport && ySupport;
    });
});