// javascript document
fontsize();
$(window).resize(function () {
    fontsize();
});

function fontsize() {
    var size;
    var winw = $(window).width();
    if (winw <= 1600 && winw > 800) {
        size = math.round(winw / 16);
    } else if (winw <= 800) {
        size = math.round(winw / 7.5);
        if (size > 65) {
            size = 65;
        }
    } else {
        size = 100;
    }
    $('html').css({
        'font-size': size + 'px'
    })
}



$(function(){
	
	//技术服务
	$('.index_js .tab-tit .item').hover(function(){
	   $(this).addclass('active').siblings().removeclass('active'), 
	   $('.index_js .tab-cont .item').eq($(this).index()).addclass('active').siblings().removeclass('active'), 
	   $('.index_js .bg-box .item').eq($(this).index()).addclass('active').siblings().removeclass('active')
	});
	
	//新闻中心
	$('.index_news .tit li').hover(function(){
	   $(this).addclass('active').siblings().removeclass('active'), 
	   $('.index_news .con').eq($(this).index()).addclass('active').siblings().removeclass('active') 
	});
	
	settimeout( function(){
		$(".header").addclass("on");
	}, 100 );//延迟毫秒
	

	settimeout( function(){
		$(".page_ban").addclass("page_active");
	}, 500 );
	
	//导航
	//$(".header").mouseenter(function () {
//		$(this).addclass("header_scroll");
//	});
//	$(".header").mouseleave(function () {
//		$(this).removeclass("header_scroll");
//	});
	
	$(".navbox li").mouseenter(function () {
		$(this).addclass("active");
		//$(this).find(".subnavbox").stop(false, false).animate({ top: 70, opacity: "show" }, 300);
		$(this).find(".subnavbox").stop().slidedown();
	});
	$(".navbox li").mouseleave(function () {
		$(this).removeclass("active");
		//$(this).find(".subnavbox").stop(false, false).animate({ top: 70, opacity: "hide" }, 300);
		$(this).find(".subnavbox").stop().slideup();
	});
	
	
	$(window).scroll(function() {
		if (jquery(this).scrolltop() > 100) {
			$(".header").addclass("header_scroll");
		} else {
			$(".header").removeclass("header_scroll");
		}
	});
	
	
	
	
	$(window).on('scroll', function () {
		if($(window).scrolltop() > 90){
			$(".izl-rmenu .btn-top").css("display","block");
		}
		else {
			$(".izl-rmenu .btn-top").css("display","none");
		}
	});
	


	/*弹窗*/
	$('.btn[name]').click(function() {

		var tf_name_id = $(this).attr('name');
		$('.tc[name=' + tf_name_id + ']').addclass('act');
	});

	$('.close').click(function() {
		$(this).parents('.tc').removeclass('act')
	});

	$('.tc-bg').click(function() {
		$(this).parents('.tc').removeclass('act')
	});

	

});


$(function(){

  $('.mission-list-item').mouseenter(function(){
    $(this).addclass('active').siblings().removeclass('active');
    let src = $(this).attr('data-back-src');
    $('.mission-list-ctn img.mission-back').one('transitionend', function(){
      $(this).remove();
    }).css({
      'opacity' : 0,
      'z-index' : 190
    });
    $('<img src="' + src + '" class="mission-back"/>').appendto('.mission-list-ctn');
  });

});


//向上
$(document).ready(function($){
	// browser window scroll (in pixels) after which the "back to top" link is shown
	var offset = 100,
		//browser window scroll (in pixels) after which the "back to top" link opacity is reduced
		offset_opacity = 1200,
		//duration of the top scrolling animation (in ms)
		scroll_top_duration = 100,
		//grab the "back to top" link
		$back_to_top = $('.up_top');

	//hide or show the "back to top" link
	$(window).scroll(function(){
		( $(this).scrolltop() > offset ) ? $back_to_top.addclass('cd-is-visible') : $back_to_top.removeclass('cd-is-visible cd-fade-out');
		if( $(this).scrolltop() > offset_opacity ) { 
			$back_to_top.addclass('cd-fade-out');
		}
	});
	//www.sucaijiayuan.com
	//smooth scroll to top
	$back_to_top.on('click', function(event){
		event.preventdefault();
		$('body,html').animate({
			scrolltop: 0 ,
		 	}, scroll_top_duration
		);
	});

});