window.onload=function(){
    if(navigator.appName == "Microsoft Internet Explorer"&&parseInt(navigator.appVersion.split(";")[1].replace(/[ ]/g, "").replace("MSIE",""))<=8){
        document.body.innerHTML += '<div id="browser-modal"><div class="browser-modal-cover"></div><div class="browser-content"><div class="browser-text"><h3 class="browser-text-title">请升级浏览器版本</h3><p class="browser-text-desc">你正在使用旧版本浏览器。请升级浏览器以获得更好的体验。</p></div><div class="browser-list"><div class="browser-item"><a href="https://www.google.cn/chrome/" target="_blank"><div class="iconfont iconchrome"></div><h4>Chrome</h4></a></div><div class="browser-item"><a href="http://www.firefox.com.cn/" target="_blank"><div class="iconfont iconfirefox"></div><h4>Firefox</h4></a></div><div class="browser-item"><a href="https://www.opera.com/zh-cn" target="_blank"><div class="iconfont iconopera"></div><h4>Opera</h4></a></div><div class="browser-item"><a href="https://www.microsoft.com/zh-cn/edge" target="_blank"><div class="iconfont iconEdge"></div><h4>Edge</h4></a></div></div></div></div>';
    }
}

//滚动加载移除css
var $window = $(window);
var $ani_elements = $('.news,.box2,.link,.footer');
function check_ani() {
	var window_height = $window.height();
	var window_top_position = $window.scrollTop();
	var window_bottom_position = (window_top_position + window_height - 100);
	$ani_elements.each(function () {
		var $element = $(this);
		var element_height = $element.outerHeight();
		var element_top_position = $element.offset().top;
		var element_bottom_position = (element_top_position + element_height);
		if ((element_bottom_position >= window_top_position) && (element_top_position <= window_bottom_position)) {
			$element.addClass('animation');
		} else {
			//$element.removeClass('animation');
		}
	});
}
$window.on('load scroll', function () {
	check_ani();
});

// 导航下拉
$('.nav1 ul>li').mouseenter(function(event) {
	$(this).find('ol').stop().slideDown();
}).mouseleave(function(event) {
	$(this).find('ol').stop().slideUp();
}); 

$(".menu").click(function(){
	$(".nav2").toggleClass("active");
	$("body").toggleClass("navshow");
	$(this).toggleClass("open");
	$('.header').toggleClass('active');
});
$(".header .nav2 ul>li i").click(function(){
	$(this).toggleClass("on");
	$(this).siblings(".header .nav2 ul ol").slideToggle();
	$(this).parent().siblings().find('i').removeClass('on');
	$(this).parent().siblings().find('ol').slideUp();
});