var?Marquee?=?function(id){
????try{document.execCommand("BackgroundImageCache",false,true);}catch(e){};
????//解決ie6下背景圖片緩存問題
????var
????marquee_box?=?document.getElementById(id),
????genuine?=?marquee_box.getElementsByTagName("dt")[0],
????clone?=?marquee_box.getElementsByTagName("dd")[0],
????speed?=?arguments[1]?||?10;
????clone.innnerHTML?=?genuine.innerHTML;
????var?scrollFn?=?function(){
????????if(marquee_box.scrollTop?==?clone.offsetTop){
????????????marquee_box.scrollTop?=?0;
????????}else{
????????????marquee_box.scrollTop++;
????????}
????};
????var?timer?=?setInterval(scrollFn,speed);//設置定時器
????marquee_box.onmouseover?=?function(){?
????????clearInterval(timer);?//移入清除定時器，停止?jié)L動
????};
????marquee_box.onmouseout?=?function(){
????????timer?=?setInterval(scrollFn,speed);?//移開時重設定時器
????};
};
window.onload?=?function(){
????Marquee("yourid");
}