这两个对象的效果如何才能同时生效

try this one<META HTTP-EQUIV="MSThemeCompatible" CONTENT="Yes">
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<html xmlns="http://www.w3.org/1999/xhtml"> 
<head> 
<meta http-equiv="Content-Type" content="text/html; charset=gb2312" /> 
<title> </title> 
<style type="text/css"> 
*{margin:0;padding:0;} 
body{font:12px/20px "宋体";color:#fff;} a{color:#0000;text-decoration:none;line-hehight:20px;} a:hover,a:active{color:#0000;line-hehight:20px;text-decoration:underline;} #scrollnews{height:20px;overflow:hidden;border:1px solid #f60;} 
#scrollnews2{height:40px;overflow:hidden;border:1px solid #f60;} 
ul,li{list-style:none;} </style> 
</head> 
<body style="background:transparent;"> 
<div id="scrollnews"> 
<a href="#" target="_blank">111111111111111111111111111 </a> <br /> 
<a href="#" target="_blank">222222222222222222222222222 </a> <br /> 
<a href="#" target="_blank">333333333333333333333333333 </a> <br /> </div> 
<div id="scrollnews2"> 
<a href="#" target="_blank">111111111111111111111111111 </a> <br /> 
<a href="#" target="_blank">222222222222222222222222222 </a> <br /> 
<a href="#" target="_blank">333333333333333333333333333 </a> <br /> </div> 
<script type="text/javascript"> 
$ = function(id){return document.getElementById(id);}
Function.prototype.THIS = function(this2){var self=this;return function(){self.apply(this2,arguments);}};var scrollObj = function(){ 
    this.init=function(elem){ 
        this.obj            = $(elem.id); 
        this.scrollHeight  = elem.ScrollHeight; 
        this.scrollNum      = elem.ScrollNum; 
        this.stopTime      = elem.StopTime; 
        this.scrollTime    = elem.ScrollTime; 
        this.cHeight        = this.obj.scrollHeight; 
        this.obj.innerHTML  += this.obj.innerHTML; 
        this.timer1          = setTimeout(this.scroll.THIS(this),1000); 
        this.h              = 0; 
    };
    this.scroll = function(){
        this.obj.scrollTop += this.scrollNum; 
        this.h += this.scrollNum; 
        if(this.h==this.scrollHeight){ 
            this.h=0; 
            clearTimeout(this.timer1); 
            if(this.obj.scrollTop >= this.cHeight) this.obj.scrollTop = this.obj.scrollTop - this.cHeight; 
            this.timer1 = setTimeout(this.scroll.THIS(this),this.stopTime); 
        }else{ 
            this.timer1 = setTimeout(this.scroll.THIS(this),this.scrollTime); 
        }
    };
};
(new scrollObj).init({id:"scrollnews",ScrollHeight:20,ScrollNum:1,StopTime:1000,ScrollTime:10}); 
(new scrollObj).init({id:"scrollnews2",ScrollHeight:40,ScrollNum:1,StopTime:50,ScrollTime:50}); 
</script> 
</body> 
</html>