window.onload = function(){
			    var d1 = document.getElementById("main");
			    var u1 = document.getElementById("lunbo_son1");
			    var u2 = document.getElementById("lunbo_son2");
			    u2.innerHTML = u1.innerHTML;    
			    function go(){
			        if(u2.offsetWidth-d1.scrollLeft<=0){    /*offsetWidth:u2可见区域的宽；scrollLeft：d1左边被卷去的长度*/
			            d1.scrollLeft=d1.scrollLeft-u2.offsetWidth;
			        } else {
			            d1.scrollLeft=d1.scrollLeft+1;
			        }
			    }
			    var run = setInterval(go,10);
			    d1.onmouseover = function(){    /*鼠标进过清除定时器*/
			        clearInterval(run);
			    }
			    d1.onmouseout = function(){    /*鼠标移开继续轮播*/
			        run = setInterval(go,10);
			    }
			    
			    $(".section .middle .title li").hover(function(){
			    	$(".section .middle .title li").css("border-bottom","none");
			    	$(this).css("border-bottom","2px solid #0f71cc");
			    },function(){});
			     $(".section .middle .title li:eq(0)").hover(function(){
			    	$(".section .middle .content").css("display","none");
			    	$(".gongsi").css("display","block");
			    },function(){});
			    $(".section .middle .title li:eq(1)").hover(function(){
			    	$(".section .middle .content").css("display","none");
			    	$(".xiangmu").css("display","block");
			    },function(){});
			    $(".section .middle .title li:eq(2)").hover(function(){
			    	$(".section .middle .content").css("display","none");
			    	$(".hangye").css("display","block");
			    },function(){});
			}