//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);
	};
   }