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copied!<p>Like this:</p> <pre><code> $("#container").animate({ 'background-position': '1110px 1110px' }, 1000, function () { }); </code></pre> <p>...</p> <pre><code>/** * @author Alexander Farkas * v. 1.22 */ (function ($) { if (!document.defaultView || !document.defaultView.getComputedStyle) { // IE6-IE8 var oldCurCSS = $.curCSS; $.curCSS = function (elem, name, force) { if (name === 'background-position') { name = 'backgroundPosition'; } if (name !== 'backgroundPosition' || !elem.currentStyle || elem.currentStyle[name]) { return oldCurCSS.apply(this, arguments); } var style = elem.style; if (!force && style && style[name]) { return style[name]; } return oldCurCSS(elem, 'backgroundPositionX', force) + ' ' + oldCurCSS(elem, 'backgroundPositionY', force); }; } var oldAnim = $.fn.animate; $.fn.animate = function (prop) { if ('background-position' in prop) { prop.backgroundPosition = prop['background-position']; delete prop['background-position']; } if ('backgroundPosition' in prop) { prop.backgroundPosition = '(' + prop.backgroundPosition; } return oldAnim.apply(this, arguments); }; function toArray(strg) { strg = strg.replace(/left|top/g, '0px'); strg = strg.replace(/right|bottom/g, '100%'); strg = strg.replace(/([0-9\.]+)(\s|\)|$)/g, "$1px$2"); var res = strg.match(/(-?[0-9\.]+)(px|\%|em|pt)\s(-?[0-9\.]+)(px|\%|em|pt)/); return [parseFloat(res[1], 10), res[2], parseFloat(res[3], 10), res[4]]; } $.fx.step.backgroundPosition = function (fx) { if (!fx.bgPosReady) { var start = $.curCSS(fx.elem, 'backgroundPosition'); if (!start) {//FF2 no inline-style fallback start = '0px 0px'; } start = toArray(start); fx.start = [start[0], start[2]]; var end = toArray(fx.end); fx.end = [end[0], end[2]]; fx.unit = [end[1], end[3]]; fx.bgPosReady = true; } //return; var nowPosX = []; nowPosX[0] = ((fx.end[0] - fx.start[0]) * fx.pos) + fx.start[0] + fx.unit[0]; nowPosX[1] = ((fx.end[1] - fx.start[1]) * fx.pos) + fx.start[1] + fx.unit[1]; fx.elem.style.backgroundPosition = nowPosX[0] + ' ' + nowPosX[1]; }; })(jQuery); </code></pre>

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