$(function() {
	$('.index-sitemap > a').bind("click",
	function() {
		$(".sitemap-menu-arrow").slideDown("slow");
		$(".sitemap-menu").slideDown("slow");
	});
	$('.add-quickmenu > a').bind("click",
	function() {
		$(".sitemap-menu-arrow").slideDown("slow");
		$(".sitemap-menu").slideDown("slow");
	});
	$('#closeSitemap').bind("click",
	function() {
		$(".sitemap-menu-arrow").slideUp("fast");
		$(".sitemap-menu").slideUp("fast");
	});
});

//头部导航下拉菜单相关
$(function() {
		$(".ncsc-nav dl").hover(function() {
		$(this).addClass("hover");
	},
	function() {
		$(this).removeClass("hover");
	});

});

//返回到顶部
$(function() {
    backTop=function (btnId){
	var btn=document.getElementById(btnId);
	var scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
	window.onscroll=set;
	btn.onclick=function (){
		btn.style.display="none";
		window.onscroll=null;
		this.timer=setInterval(function(){
		    scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
			scrollTop-=Math.ceil(scrollTop*0.1);
			if(scrollTop==0) clearInterval(btn.timer,window.onscroll=set);
			if (document.documentElement.scrollTop > 0) document.documentElement.scrollTop=scrollTop;
			if (document.body.scrollTop > 0) document.body.scrollTop=scrollTop;
		},10);
	};
	function set(){
	    scrollTop = document.documentElement.scrollTop || document.body.scrollTop;
	    btn.style.display=scrollTop?'block':"none";
	}
	};
	backTop('gotop');
});

(function($) {
//凸显触及图片样式
	$.fn.jfade = function(settings) {

		var defaults = {
			start_opacity: "1",
			high_opacity: "1",
			low_opacity: ".1",
			timing: "500"
		};
		var settings = $.extend(defaults, settings);
		settings.element = $(this);

		//set opacity to start
		$(settings.element).css("opacity", settings.start_opacity);
		//mouse over
		$(settings.element).hover(

		//mouse in
		function() {
			$(this).stop().animate({
				opacity: settings.high_opacity
			},
			settings.timing); //100% opacity for hovered object
			$(this).siblings().stop().animate({
				opacity: settings.low_opacity
			},
			settings.timing); //dimmed opacity for other objects
		},

		//mouse out
		function() {
			$(this).stop().animate({
				opacity: settings.start_opacity
			},
			settings.timing); //return hovered object to start opacity
			$(this).siblings().stop().animate({
				opacity: settings.start_opacity
			},
			settings.timing); // return other objects to start opacity
		});
		return this;
	}
})(jQuery);