// JScript 文件
function Marquee(obj){
this.obj=obj;
var c=this;
this.width=0;
this.pWidth=0;
this.left=0;
this.add=1;
this.timeout=50;
this.interval=null;
document.body.onload=function(){c.load();};
}
Marquee.prototype.load=function(){
this.pWidth=this.obj.parentNode.offsetWidth;
this.width=this.obj.offsetWidth;
if(this.width<=this.pWidth)
return;
var c=this;
var table=document.createElement('table');
table.setAttribute('cellpadding','0')
table.setAttribute('cellspacing','0')
table.setAttribute('border','0')
var tr=table.insertRow();
var td_1=tr.insertCell();
var td_2=tr.insertCell();
var pNode=this.obj.parentNode;
td_1.innerHTML=pNode.innerHTML;
td_2.innerHTML=pNode.innerHTML;
pNode.innerHTML='';
pNode.appendChild(table);
this.obj=table;
table.onmouseover=function(){c.stop();};
table.onmouseout=function(){c.start();};
this.width=this.obj.offsetWidth;
this.interval=setInterval(function(){c.move();},this.timeout);
}
Marquee.prototype.stop=function(){
clearInterval(this.interval);
}
Marquee.prototype.start=function(){
var c=this;
this.interval=setInterval(function(){c.move();},this.timeout);
}
Marquee.prototype.move=function(){
this.left=this.left-this.add;
if(this.left<=(this.pWidth-this.width)){
this.left=this.pWidth-this.width/2-this.add;
}
if(this.left<(-this.width)){
this.left=this.pWidth;
}
this.obj.style.marginLeft=this.left+'px';
}
/*
有什么问题请到论坛中发表
*/
