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.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="<table cellspacing='0' cellpadding='0' style='border-collapse:collapse;display:inline;'><tr><td noWrap=true style='white-space: nowrap;word-break:keep-all;'>MSCLASS_TEMP_HTML</td><td noWrap=true style='white-space: nowrap;word-break:keep-all;'>MSCLASS_TEMP_HTML</td></tr></table>";
var templateTop="<table cellspacing='0' cellpadding='0' style='border-collapse:collapse;'><tr><td>MSCLASS_TEMP_HTML</td></tr><tr><td>MSCLASS_TEMP_HTML</td></tr></table>";
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;
}
}