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")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.BakStep = this.Step;
        this.ID.style.width = this.Width;
        this.ID.style.height = this.Height;
        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.Direction > 1 && 

msobj.ClientScroll <msobj.Width))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;
        }
}