间歇性向上滚动文字,JavaScript

运行代码框
<LINK href="http://www.com.cn/css/default.css" type="text/css" rel="stylesheet">
<LINK href="http://www.com.cn/css/style.css" type="text/css" rel="stylesheet">
<script>
window.onload=function(){
  new Marquee(
    "divg",  //容器ID
    0,  //向上滚动(0向上 1向下 2向左 3向右)
    2,  //滚动的步长
    200,  //容器可视宽度
    36,  //容器可视高度
    50,  //定时器 数值越小，滚动的速度越快(1000=1秒,建议不小于20)
    2000,  //间歇停顿时间(0为不停顿,1000=1秒)
    1000,  //开始时的等待时间(0为不等待,1000=1秒)
    18  //间歇滚动间距(可选)
    );
  };
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;
    }
  }
</script>
<style type="text/css">
.linkbluebg:link,.linkbluebg:visited{color:#1673a7;
text-decoration:none;
height:18px;
}
.linkbluebg:hover,.linkbluebg:active{
	color:#ffffff;
	text-decoration:none;
	height:18px;
	background-color:#1673a7;}
</style>
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</div>
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