window.onload=function(){ 
  new Marquee( 
    "scrollBox2",  //容器ID<br /> 
    0,  //向上滚动(0向上 1向下 2向左 3向右)<br /> 
    2,  //滚动的步长<br /> 
    450,  //容器可视宽度<br /> 
    20,  //容器可视高度<br /> 
    50,  //定时器 数值越小，滚动的速度越快(1000=1秒,建议不小于20)<br /> 
    2000,  //间歇停顿时间(0为不停顿,1000=1秒)<br /> 
    1000,  //开始时的等待时间(0为不等待,1000=1秒)<br /> 
    20  //间歇滚动间距(可选)<br /> 
    ); 
  }; 
function Marquee(){ 
  this.ID=document.getElementById(arguments[0]); 
  this.Direction=arguments[1]; 
  this.Step=arguments[2]; 
  this.Width=arguments[3]; 
  this.Height=arguments[4]; 
  this.Timer=arguments[5]; 
  this.WaitTime=arguments[6]; 
  this.StopTime=arguments[7]; 
  if(arguments[8]){this.ScrollStep=arguments[8];}else{this.ScrollStep=this.Direction>1?this.Width:this.Height;} 
  this.CTL=this.StartID=this.Stop=this.MouseOver=0; 
  this.ID.style.overflowX=this.ID.style.overflowY="hidden"; 
  this.ID.noWrap=true; 
  this.ID.style.width=this.Width; 
  this.ID.style.height=this.Height; 
  this.ClientScroll=this.Direction>1?this.ID.scrollWidth:this.ID.scrollHeight; 
  this.ID.innerHTML+=this.ID.innerHTML; 
  this.Start(this,this.Timer,this.WaitTime,this.StopTime); 
  } 
Marquee.prototype.Start=function(msobj,timer,waittime,stoptime){ 
  msobj.StartID=function(){msobj.Scroll();} 
  msobj.Continue=function(){ 
    if(msobj.MouseOver==1){setTimeout(msobj.Continue,waittime);} 
    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,waittime);} 
  msobj.Begin=function(){ 
    msobj.TimerID=setInterval(msobj.StartID,timer); 
    msobj.ID.onmouseover=function(){msobj.MouseOver=1; clearInterval(msobj.TimerID);} 
    msobj.ID.onmouseout=function(){msobj.MouseOver=0; if(msobj.Stop==0){clearInterval(msobj.TimerID); msobj.TimerID=setInterval(msobj.StartID,timer);}} 
    } 
  setTimeout(msobj.Begin,stoptime); 
  } 
Marquee.prototype.Scroll=function(){ 
  switch(this.Direction){ 
    case 0: 
      this.CTL+=this.Step; 
      if(this.CTL>=this.ScrollStep&&this.WaitTime>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.WaitTime>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.WaitTime>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.WaitTime>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; 
    } 
  }