IE7 bug test
HTML
<div id="test" style="background-position:0 0;">text</div>
JavaScript
var elem = $('#test')[0];
console.log( $('#test').css('background-position') );
console.log( jQuery.style( elem, 'background-position' ) );
<div id="test" style="background-position:0 0;">text</div>
var elem = $('#test')[0];
console.log( $('#test').css('background-position') );
console.log( jQuery.style( elem, 'background-position' ) );