js图片叠加滚动切换代码

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var complete = true;
	var property = null;
	for (property in this.options)
	{
		var iCur = parseFloat(css(this.obj, property));
		property == "opacity" && (iCur = parseInt(iCur.toFixed(2) * 100));
		var iSpeed = (this.options[property] - iCur) / 5;
		iSpeed = iSpeed > 0 ? Math.ceil(iSpeed) : Math.floor(iSpeed);
		this.options[property] == iCur || (complete = false, css(this.obj, property, iSpeed + iCur))
	}
	complete && (clearInterval(this.obj.timer), this.__onEnd__ && this.__onEnd__.apply(this.obj))
};