$(function() {
	//导航栏固定
	$(window).scroll(function() {
		sctop = $(document).scrolltop();
		if(sctop < 50) {
			$(".header").css({
				"background": "rgba(255,255,255,0)",
				"transition": "all 0.3s ease-in-out",
				"box-shadow": "none"
			})
			$(".search").css({
                "opacity": "1",
                "display": "block",
				"transition": "all 0.3s ease-in-out",
			})
			$(".header .top .logo img").css({
				"transform": "scale(1)",
				"transition": "all 0.3s ease-in-out"
			})
		} else if(sctop >= 50 && sctop < 100) {
			$(".header").css({
				"background": "rgba(255,255,255,0.125)",
				"transition": "all 0.3s ease-in-out"
			})
			$(".search").css({
                "opacity": "0.875",
                "display": "block",
				"transition": "all 0.3s ease-in-out",
			})
			$(".header .top .logo img").css({
				"transform": "scale(0.875)",
				"transition": "all 0.3s ease-in-out"
			})
		} else if(sctop >= 100 && sctop < 150) {
			$(".header").css({
				"background": "rgba(255,255,255,0.25)",
				"transition": "all 0.3s ease-in-out"
			})
			$(".search").css({
				"opacity": "0.75",
				"transition": "all 0.3s ease-in-out",
			})
			$(".header .top .logo img").css({
				"transform": "scale(0.75)",
				"transition": "all 0.3s ease-in-out"
			})
		} else if(sctop >= 150 && sctop < 200) {
			$(".header").css({
				"background": "rgba(255,255,255,0.375)",
				"transition": "all 0.3s ease-in-out"
			})
			$(".search").css({
				"opacity": "0.625",
				"transition": "all 0.3s ease-in-out",
			})
			$(".header .top .logo img").css({
				"transform": "scale(0.625)",
				"transition": "all 0.3s ease-in-out"
			})
		} else if(sctop >= 200 && sctop < 250) {
			$(".header").css({
				"background": "rgba(255,255,255,0.5)",
				"transition": "all 0.3s ease-in-out",
				"box-shadow": "none"
			})
			$(".search").css({
				"opacity": "0.5",
				"transition": "all 0.3s ease-in-out",
			})
			$(".header .top .logo img").css({
				"transform": "scale(0.5)",
				"transition": "all 0.3s ease-in-out"
			})
		} else if(sctop >= 250 && sctop < 300) {
			$(".header").css({
				"background": "rgba(255,255,255,0.625)",
				"transition": "all 0.3s ease-in-out"
			})
			$(".search").css({
				"opacity": "0.375",
				"transition": "all 0.3s ease-in-out",
			})
			$(".header .top .logo img").css({
				"transform": "scale(0.375)",
				"transition": "all 0.3s ease-in-out"
			})
		} else if(sctop >= 300 && sctop < 350) {
			$(".header").css({
				"background": "rgba(255,255,255,0.75)",
				"transition": "all 0.3s ease-in-out"
			})
			$(".search").css({
				"opacity": "0.25",
				"transition": "all 0.3s ease-in-out",
			})
			$(".header .top .logo img").css({
				"transform": "scale(0.25)",
				"transition": "all 0.3s ease-in-out"
			})
		} else if(sctop >= 350 && sctop < 400) {
			$(".header").css({
				"background": "rgba(255,255,255,0.875)",
				"transition": "all 0.3s ease-in-out",
				"height":"110px"
			})
			$(".search").css({
				"opacity": "0.125",
				"display":"block",
				"transition": "all 0.3s ease-in-out",
			})
			$(".header .top .logo img").css({
				"transform": "scale(0.125)",
				"transition": "all 0.3s ease-in-out"
			})
		} else if(sctop >= 400) {
			$(".header").css({
				"background": "rgba(255,255,255,1)",
				"transition": "all 0.3s ease-in-out",
				"height":"80px",
				"box-shadow": "0px 0px 5px rgba(0,0,0,.2)"
			})
			$(".search").css({
				"opacity": "0",
				"display":"none",
				"transition": "all 0.3s ease-in-out",
			})
			$(".header .top .logo img").css({
				"transform": "scale(0)",
				"transition": "all 0.3s ease-in-out"
			})
		}

	})
	//下拉菜单
	$(".nav>ul>li").hover(function() {
		var tow_nav=$(this).children(".tow_nav")
		var alen=tow_nav.children("a").length;
		tow_nav.height(alen*50)
	}, function() {
		$(this).children(".tow_nav").height(0)
	})
})