/*网站底部返回顶部*/
$(function(){	
	$('#returntop').bind('click',function(){
		$('html,body').animate({scrolltop:$('.header').offset().top},500);
		return false;
	});
})


/*表单验证*/
function reg(ele_name,txt){
	var load_name = $(txt).val();
	$(ele_name).submit(function(){
		var name = $(txt).val();
		if($.trim(name)=='' || name == load_name){
			$(txt).css('border-color','red');
			$(txt).focus();
            return false;           
        }
	})
}

/*******以下不得删除*******/
/*产品内页产品放大左右滚动效果*/
$(function(){
	 $(".items ul li img").hover(function(){
		var img_url=$(this).attr("src");
		$(this).closest(".showb_scroll").siblings(".showb_preview").children("span").children("img").attr("src",img_url);
		/*var img_bimg=$(this).attr("bimg");
		$(this).closest(".showb_scroll").siblings(".showb_preview").children("span").children("img").attr("jqimg",img_bimg);*/
	 })
	  /*if($(".showb_preview").children(".jqzoom").length>0){
			  $(".jqzoom").jqueryzoom({xzoom:380,yzoom:410});
		  }*/
	//下一张
	//var templength = 0; //临时变量,当前移动的长度
	$(".showb_scroll .next").bind("click",function(){
		var templength = number($(this).parent(".showb_scroll").attr("bimg"))
		var viewnum = 1; //设置每次显示图片的个数量
		var movenum = 2; //每次移动的数量
		var movetime = 300; //移动速度,毫秒
		var scrolldiv = $(this).siblings(".items").children("ul")//$(".showb_scroll .items ul"); //进行移动动画的容器
		var scrollitems = $(this).siblings(".items").children("ul").children("li")//$(".showb_scroll .items ul li"); //移动容器里的集合
		var movelength = scrollitems.eq(0).width() * movenum; //计算每次移动的长度
		
		var countlength = (scrollitems.length - viewnum) * scrollitems.eq(0).width(); //计算总长度,总个数*单个长度
		
		if(templength < countlength){
			if((countlength - templength) > movelength){
				scrolldiv.animate({left:"-=" + movelength + "px"}, movetime);
				templength += movelength;
				$(this).parent(".showb_scroll").attr("bimg",templength)
			}else{
				scrolldiv.animate({left:"-=" + (countlength - templength) + "px"}, movetime);
				templength += (countlength - templength);
				$(this).parent(".showb_scroll").attr("bimg",templength)
			}
		}
	});
	//上一张
	$(".showb_scroll .prev").bind("click",function(){
		var templength = number($(this).parent(".showb_scroll").attr("bimg"))
		var viewnum = 1; //设置每次显示图片的个数量
		var movenum = 2; //每次移动的数量
		var movetime = 300; //移动速度,毫秒
		var scrolldiv = $(this).siblings(".items").children("ul")//$(".showb_scroll .items ul"); //进行移动动画的容器
		var scrollitems = $(this).siblings(".items").children("ul").children("li")//$(".showb_scroll .items ul li"); //移动容器里的集合
		var movelength = scrollitems.eq(0).width() * movenum; //计算每次移动的长度
		
		var countlength = (scrollitems.length - viewnum) * scrollitems.eq(0).width(); //计算总长度,总个数*单个长度
		if(templength > 0){
			if(templength > movelength){
				scrolldiv.animate({left: "+=" + movelength + "px"}, movetime);
				templength -= movelength;
				$(this).parent(".showb_scroll").attr("bimg",templength)
			}else{
				scrolldiv.animate({left: "+=" + templength + "px"}, movetime);
				templength = 0;
				$(this).parent(".showb_scroll").attr("bimg",templength)
			}
		}
	});



});



$(function(){
  $('.nav ul li:last').css("background","none");
  $('.banner .flexslider').flexslider({
		animation: "slide"//也可以写fade
	});
})

$(function(){
  $('.nav li').hover(function(){
	$(this).addclass('select').siblings('li').removeclass('select')  
  },function(){
    $(this).removeclass('select')
  })
  	
})
$(function(){
  $('.in_pro ul li:first').css("border","none")
})

// javascript document
$(function(){
	//导航
	$(".topnavul ul li:first-child").css("margin-left","24px");
	$(".topnavul ul li:last-child").css("background","none");
	//产品展示
	$(".pro_show dl:nth-child(3n+1)").css("margin-left","0px");
	$(".nypro li:nth-child(3n+1)").css("margin-left","0px");
	//工程案例
	$(".casec dl:nth-child(4n+1)").css("margin-left","0px");
	//首页新闻
	$(".newr:nth-child(2)").css("background","url(../images/01.png) no-repeat left 30px");
	$(".newr:nth-child(3)").css("background","url(../images/03.png) no-repeat left 30px");
})