// developer.mozilla.org/en/CSS/background-repeat // test page: jsbin.com/uzesun/ // http://jsfiddle.net/ryanseddon/yMLTQ/6/ (function(){ function getBgRepeatValue(elem){ return (window.getComputedStyle ? getComputedStyle(elem, null).getPropertyValue('background') : elem.currentStyle['background']); } Modernizr.testStyles(' #modernizr { background-repeat: round; } ', function(elem, rule){ Modernizr.addTest('bgrepeatround', getBgRepeatValue(elem) == 'round'); }); Modernizr.testStyles(' #modernizr { background-repeat: space; } ', function(elem, rule){ Modernizr.addTest('bgrepeatspace', getBgRepeatValue(elem) == 'space'); }); })();