function couplet() {
	if (arguments.length >= 1)
		this.objID = document.getElementById(arguments[0]);
	if (arguments.length >= 2)
		this.divTop = arguments[1];
	if (arguments.length >= 3)
		this.divPlane = arguments[2];
	if (arguments.length >= 4)
		this.scrollDelay = arguments[4];
	if (arguments.length >= 5)
		this.waitTime = arguments[5];
	if (!this.objID) {
		//alert("对象名【" + arguments[0] + "】无效，对联无法初始化，请检查对象名称是否正确！");
		this.objID = null;
		return;
	} else {
		this.objID.style.position = "absolute";
		this.objID.style.display = "block";
	}
	if ("" == this.objID.style.top) {
		if (isNaN(this.divTop)) {
			//alert("对象垂直位置(top)参数必须为数字。");
			return;
		} else {
			this.objID.style.top = this.divTop + "px";
		}
	}
	if ("" == this.objID.style.left && "" == this.objID.style.right) {
		if (isNaN(this.divPlane)) {
			//alert("对象水平位置(left||right)参数必须为数字。");
			return;
		}
		if (this.divPlane > 0)
			this.objID.style.left = this.divPlane + "px";
		if (this.divPlane < 0)
			this.objID.style.right = Math.abs(this.divPlane) + "px";
	}
	if (this.scrollDelay < 15 || isNaN(this.scrollDelay))
		this.scrollDelay = 15;
	if (this.waitTime < 500 || isNaN(this.waitTime))
		this.waitTime = 500;
	if (arguments.length >= 1)
		this.start();
}
couplet.prototype.start = function() {
	if (null == this.objID)
		return;
	var objCouplet = this;
	timer = this.scrollDelay;
	objCouplet.lastScrollY = 0;
	objCouplet.timerID = null;
	objCouplet.startID = function() {
		if ("block" == objCouplet.objID.style.display) {
			objCouplet.run();
		} else {
			clearInterval(objCouplet.timerID);
		}
	}
	objCouplet.Begin = function() {
		objCouplet.timerID = setInterval(objCouplet.startID, timer);
	}

	setTimeout(objCouplet.Begin, this.waitTime);
}
couplet.prototype.run = function() {
	if (document.documentElement && document.documentElement.scrollTop) {
		uu_scrY = parseFloat(document.documentElement.scrollTop);
	} else if (document.body) {
		uu_scrY = parseFloat(document.body.scrollTop);
	}
	uu_divX = parseFloat(this.objID.style.top.replace("px", ""));
	uu_curTop = .1 * (uu_scrY - this.lastScrollY);
	uu_curTop = uu_curTop > 0 ? Math.ceil(uu_curTop) : Math.floor(uu_curTop);
	this.objID.style.top = parseFloat(uu_divX + uu_curTop) + "px";
	this.lastScrollY += uu_curTop;
}