function Marquee() {
	this.ID = document.getElementById(arguments[0]);
	if (!this.ID) {
		alert("您要设置的\"" + arguments[0] + "\"初始化错误\r\n请检查标签ID设置是否正确!");
		this.ID = -1;
		return;
	}
	this.Direction = this.Width = this.Height = this.DelayTime = this.WaitTime = this.Correct = this.CTL = this.StartID = this.Stop = this.MouseOver = 0;
	this.Step = 1;
	this.Timer = 30;
	this.DirectionArray = {"top":0 , "bottom":1 , "left":2 , "right":3};
	if (typeof arguments[1] == "number" || typeof arguments[1] == "string") this.Direction = arguments[1];
	if (typeof arguments[2] == "number") this.Step = arguments[2];
	if (typeof arguments[3] == "number") this.Width = arguments[3];
	if (typeof arguments[4] == "number") this.Height = arguments[4];
	if (typeof arguments[5] == "number") this.Timer = arguments[5];
	if (typeof arguments[6] == "number") this.DelayTime = arguments[6];
	if (typeof arguments[7] == "number") this.WaitTime = arguments[7];
	if (typeof arguments[8] == "number") this.ScrollStep = arguments[8];
	this.ID.style.overflow = this.ID.style.overflowX = this.ID.style.overflowY = "hidden";
	this.ID.noWrap = true;
	this.IsNotOpera = (navigator.userAgent.toLowerCase().indexOf("opera") == -1);
	if (arguments.length >= 7) this.Start();
}


Marquee.prototype.Start = function() {
	if (this.ID == -1) return;
	if (this.WaitTime < 800) this.WaitTime = 800;
	if (this.Timer < 20) this.Timer = 20;
	if (this.Width == 0) this.Width = parseInt(this.ID.style.width);
	if (this.Height == 0) this.Height = parseInt(this.ID.style.height);
	if (typeof this.Direction == "string") this.Direction = this.DirectionArray[this.Direction.toString().toLowerCase()];
	this.HalfWidth = Math.round(this.Width / 2);
	this.HalfHeight = Math.round(this.Height / 2);
	this.BakStep = this.Step;
	this.ID.style.width = this.Width + "px";
	this.ID.style.height = this.Height + "px";
	if (typeof this.ScrollStep != "number") this.ScrollStep = this.Direction > 1 ? this.Width : this.Height;
	var msobj = this;
	var timer = this.Timer;
	var delaytime = this.DelayTime;
	var waittime = this.WaitTime;
	msobj.StartID = function() {
						msobj.Scroll();
					};
	msobj.Continue = function() {
						if (msobj.MouseOver == 1) {
							setTimeout(msobj.Continue, delaytime);
						} else {
							clearInterval(msobj.TimerID);
							msobj.CTL = msobj.Stop = 0;
							msobj.TimerID = setInterval(msobj.StartID,timer);
						}
					};
	msobj.Pause =   function(){
						msobj.Stop = 1;
						clearInterval(msobj.TimerID);
						setTimeout(msobj.Continue, delaytime);
				  	}

	msobj.Begin = function() {
					msobj.ClientScroll = msobj.Direction > 1 ? msobj.ID.scrollWidth : msobj.ID.scrollHeight;
					if ((msobj.Direction <= 1 && msobj.ClientScroll <= msobj.Height + msobj.Step) || (msobj.Direction > 1 && msobj.ClientScroll <= msobj.Width + msobj.Step)) return;
					msobj.ID.innerHTML += msobj.ID.innerHTML;
					msobj.TimerID = setInterval(msobj.StartID,timer);
					if (msobj.ScrollStep < 0) return;
					msobj.ID.onmousemove =  function(event) {
												if (msobj.ScrollStep == 0 && msobj.Direction > 1) {
													var event = event || window.event;
													if (window.event) {
														if (msobj.IsNotOpera) {
															msobj.EventLeft = event.srcElement.id == msobj.ID.id ? event.offsetX - msobj.ID.scrollLeft : event.srcElement.offsetLeft - msobj.ID.scrollLeft + event.offsetX;
														} else {
															msobj.ScrollStep = null;
															return;
														}
													} else {
														msobj.EventLeft = event.layerX - msobj.ID.scrollLeft;
													}
												msobj.Direction = msobj.EventLeft > msobj.HalfWidth ? 3 : 2;
												msobj.AbsCenter = Math.abs(msobj.HalfWidth - msobj.EventLeft);
												msobj.Step = Math.round(msobj.AbsCenter * (msobj.BakStep*2) / msobj.HalfWidth);
												}
										   	};
			msobj.ID.onmouseover =  function() {
										if (msobj.ScrollStep == 0) return;
										msobj.MouseOver = 1;
										clearInterval(msobj.TimerID);
									};
			msobj.ID.onmouseout =   function() {
										if (msobj.ScrollStep == 0){
											if(msobj.Step == 0) msobj.Step = 1;
											return;
										}
										msobj.MouseOver = 0;
										if (msobj.Stop == 0) {
											clearInterval(msobj.TimerID);
											msobj.TimerID = setInterval(msobj.StartID, timer);
										}
									}
				};
	setTimeout(msobj.Begin, waittime);
}

Marquee.prototype.Scroll =  function() {
								switch (this.Direction) {
									case 0:
										this.CTL += this.Step;
										if (this.CTL >= this.ScrollStep && this.DelayTime > 0) {
											this.ID.scrollTop += this.ScrollStep + this.Step - this.CTL;
											this.Pause();
											return;
										} else {
											if (this.ID.scrollTop >= this.ClientScroll) {
												this.ID.scrollTop -= this.ClientScroll;
											}
											this.ID.scrollTop += this.Step;
										}
									break;
									
									case 1:
										this.CTL += this.Step;
										if (this.CTL >= this.ScrollStep && this.DelayTime > 0) {
											this.ID.scrollTop -= this.ScrollStep + this.Step - this.CTL;
											this.Pause();
											return;
										} else {
											if (this.ID.scrollTop <= 0) {
												this.ID.scrollTop += this.ClientScroll;
											}
											this.ID.scrollTop -= this.Step;
										}
									break;
									
									case 2:
										this.CTL += this.Step;
										if (this.CTL >= this.ScrollStep && this.DelayTime > 0) {
											this.ID.scrollLeft += this.ScrollStep + this.Step - this.CTL;
											this.Pause();
											return;
										} else {
											if (this.ID.scrollLeft >= this.ClientScroll) {
												this.ID.scrollLeft -= this.ClientScroll;
											}
											this.ID.scrollLeft += this.Step;
										}
										break;
										
										case 3:
											this.CTL += this.Step;
											if (this.CTL >= this.ScrollStep && this.DelayTime > 0) {
												this.ID.scrollLeft -= this.ScrollStep + this.Step - this.CTL;
												this.Pause();
												return;
											} else {
												if(this.ID.scrollLeft <= 0) {
													this.ID.scrollLeft += this.ClientScroll;
												}
												this.ID.scrollLeft -= this.Step;
											}
										break;
									}
								};