//滚动
function scroll(){
	//产品滚动
	var speed = 30; //数字越大速度越慢
	var tab = document.getElementById("demo");
	var tab1 = document.getElementById("demo1");
	var tab2 = document.getElementById("demo2");
	var liwidth=tab1.getElementsByTagName("li");
	var liwidths=liwidth[0].offsetWidth;
	var length=$("#demo1 li").length;
	var mleft=parseInt($("#demo1 li:eq(0)").css("marginLeft"));
	var mright=parseInt($("#demo1 li:eq(0)").css("marginRight"));
	var totalwidth=(liwidths+mleft+mright)*length*2+300;
	$("#indemo").width(totalwidth);
	tab2.innerHTML = tab1.innerHTML;
	function Marquee(){
		if(tab2.offsetWidth - tab.scrollLeft <= 0)
			tab.scrollLeft -= tab1.offsetWidth;
		else{
			tab.scrollLeft++;
		}
	}
	var MyMar = setInterval(Marquee,speed);

	tab.onmouseover = function(){
		clearInterval(MyMar);
	};
	tab.onmouseout = function(){
		MyMar = setInterval(Marquee,speed);
	};
}

//滚动
function scroll2(){
	//产品滚动
	var speed = 30; //数字越大速度越慢
	var tab = document.getElementById("m_demo");
	var tab1 = document.getElementById("m_demo1");
	var tab2 = document.getElementById("m_demo2");
	var liwidth=tab1.getElementsByTagName("li");
	var liwidths=liwidth[0].offsetWidth;
	var length=$("#m_demo1 li").length;
	var mleft=parseInt($("#m_demo1 li:eq(0)").css("marginLeft"));
	var mright=parseInt($("#m_demo1 li:eq(0)").css("marginRight"));
	tab2.innerHTML = tab1.innerHTML;
	var derection=1;
$(".l_btn").click(function(){
derection=1;
});
$(".r_btn").click(function(){
derection=0;
});
	function Marquee(){
		if(derection){
		if(tab2.offsetWidth - tab.scrollLeft <= 0)
			tab.scrollLeft -= tab1.offsetWidth;
		else{
			tab.scrollLeft++;
		}
	}else{
		if(tab.scrollLeft <= 0)
			tab.scrollLeft += tab1.offsetWidth;
		else{
			tab.scrollLeft--;
		}
	}
	}
	var MyMar = setInterval(Marquee,speed);

	tab.onmouseover = function(){
		clearInterval(MyMar);
	};
	tab.onmouseout = function(){
		MyMar = setInterval(Marquee,speed);
	};
}




function news_scroll(){
	//产品滚动
	var speed = 60; //数字越大速度越慢
	var tab = document.getElementById("ydemo");
	var tab1 = document.getElementById("ydemo1");
	var tab2 = document.getElementById("ydemo2");
	tab2.innerHTML = tab1.innerHTML;
	function Marquee(){
	 if (tab2.offsetHeight - tab.scrollTop <= 0){
	  tab.scrollTop = 0;
	 }else{
	  var tmp = tab.scrollTop;
	  tab.scrollTop++;
	  if (tab.scrollTop == tmp){
	   tab.scrollTop = 1;
	  }
	 }
	}
	var MyMar = setInterval(Marquee,speed);
   
	tab.onmouseover = function(){
	 clearInterval(MyMar);
	};
	tab.onmouseout = function(){
	 MyMar = setInterval(Marquee,speed);
	};
   }