var Marquee_up= function(id){
try{document.execCommand("BackgroundImageCache", false, true);}catch(e){};
if(document.getElementById(id)){
	var container = document.getElementById(id),
	original = container.getElementsByTagName("dt")[0],
	clone = container.getElementsByTagName("dd")[0],
	speed = arguments[1] || 60;
	clone.innerHTML=original.innerHTML;
	var rolling = function(){
	if(container.scrollTop == clone.offsetTop){
	container.scrollTop = 0;
	}else{
	container.scrollTop++;
	}
	}
	var timer = setInterval(rolling,speed)//设置定时器
	container.onmouseover=function() {clearInterval(timer)}//鼠标移到marquee上时，清除定时器，停止滚动
	container.onmouseout=function() {timer=setInterval(rolling,speed)}//鼠标移开时重设定时器
}
}


var Marquee_left= function(id){
try{document.execCommand("BackgroundImageCache", false, true);}catch(e){};
//alert(typeof(document.getElementById(id))+id);
if(document.getElementById(id)){
	var container = document.getElementById(id),
	original = container.getElementsByTagName("dt")[0],
	clone = container.getElementsByTagName("dd")[0],
	speed = arguments[1] || 60;
	clone.innerHTML=original.innerHTML;
	var rolling = function(){
	if(container.scrollLeft == clone.offsetLeft){
	container.scrollLeft = 0;
	}else{
	container.scrollLeft++;
	}
	}
	var timer = setInterval(rolling,speed)//设置定时器
	container.onmouseover=function() {clearInterval(timer)}//鼠标移到marquee上时，清除定时器，停止滚动
	container.onmouseout=function() {timer=setInterval(rolling,speed)}//鼠标移开时重设定时器
	}
}