/**
* @author Alexander Farkas
* v. 1.21
*/
(function($) { if (!document.defaultView || !document.defaultView.getComputedStyle) { var oldCurCSS = jQuery.curCSS; jQuery.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) { start = '0px 0px' } start = toArray(start); fx.start = [start[0], start[2]]; var end = toArray(fx.options.curAnim.backgroundPosition); fx.end = [end[0], end[2]]; fx.unit = [end[1], end[3]]; fx.bgPosReady = true } 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);