function Marquee() 

{ 

this.ID = document.getElementById(arguments[0]); 

if(!this.ID) 

{ 

  alert("您要設置的\"" + arguments[0] + "\"初始化錯誤\r\n請檢查ID是否正確!"); 

  this.ID = -1; 

  return; 

} 

this.Direction = this.Width = this.Height = this.DelayTime = this.WaitTime = this.CTL = this.StartID = this.Stop = this.MouseOver = 0; 

this.Step = 1; 

this.Timer = 30; 

this.DirectionArray = {"top":0 , "up":0 , "bottom":1 , "down":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 templateLeft = "MSCLASS_TEMP_HTML MSCLASS_TEMP_HTML"; 

var templateTop = "MSCLASS_TEMP_HTML MSCLASS_TEMP_HTML"; 

var msobj = this; 

msobj.tempHTML = msobj.ID.innerHTML; 

if(msobj.Direction <= 1) 

{ 

  msobj.ID.innerHTML = templateTop.replace(/MSCLASS_TEMP_HTML/g,msobj.ID.innerHTML); 

} 

else 

{ 

  if(msobj.ScrollStep == 0 && msobj.DelayTime == 0) 

  { 

  msobj.ID.innerHTML += msobj.ID.innerHTML; 

  } 

  else 

  { 

  msobj.ID.innerHTML = templateLeft.replace(/MSCLASS_TEMP_HTML/g,msobj.ID.innerHTML); 

  } 

} 

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 / 2 : msobj.ID.scrollHeight / 2; 

  if((msobj.Direction <= 1 && msobj.ClientScroll <= msobj.Height + msobj.Step) || (msobj.Direction > 1 && msobj.ClientScroll <= msobj.Width + msobj.Step))  { 

    msobj.ID.innerHTML = msobj.tempHTML; 

    delete(msobj.tempHTML); 

    return; 

  } 

  delete(msobj.tempHTML); 

  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; 

} 

}