$( function(){

//宽高自适应
	img('.autoimg');

	function img(e){
		$(e).on('load', function() {
		    var width = $(this)[0].naturalWidth
		    var height = $(this)[0].naturalHeight

		    if ( width > height ) {
		        $(this).height('100%');
		    } else {
		        $(this).css("height","auto");
		        $(this).width('100%')
		    }
		})

	}
//左侧判断有没有下拉
	$(".all_left .main li").each(function(){
		if ( $(this).find(".show").length > 0 ) {
			$(this).find(".btn i").show()
		}
	})
	$(".all_left .main .btn").click(function(){
		if ( $(this).next().css("display") == "none" ) {
			$(".all_left .main li .show").slideUp(300);
			$(this).parent().addClass("active1");
			$(this).next().slideDown(300);
		}else{
			$(this).next().slideUp(300);
			$(this).parent().removeClass("active1");
		}
	})
	


//返回顶部
	 var $Top = $(".footer .back");
	 $Top.click( function(){
		 $("body,html").animate({ scrollTop: 0 }, 500);
    	 return false;	 
	 } );


 // 小屏幕导航 
	 var $smallNavBtn = $(".small_nav_btn");
	 var onOff = true;
	 var $smallNav = $(".small_nav");
	 var $pMask = $(".hidebg");

	 $smallNavBtn.click( function(){
		 if( onOff ){
		 	$(this).addClass("active");
			 $pMask.fadeIn(200);
		 	$smallNav.slideDown(200)
			 $("body").css("overflow","hidden");
			 $smallNavBtn.find("i").css("background","#000");
		 }else{
		 	$(this).removeClass("active");
			 $smallNav.slideUp(200)
			 $pMask.fadeOut(200);
			 $("body").css("overflow","auto");
			 $smallNavBtn.find("i").css("background","#000");
		 }
		 onOff = !onOff;
	 } );

	 $pMask.click( function(){
		 // $smallNav.animate({"right":-160},400);
		 $smallNav.slideUp(200)
		 $(this).fadeOut(400);
		 $("body").css("overflow","auto");
		 $smallNavBtn.find("i").css("background","#000");

		 onOff = true
	 } );
// 手机端导航下拉的下拉
	$(".small_nav .wapper .btn i").click(function(){
		var $this = $(this); 
		if ( $this.next(".show").css("display") == "none" ) {
			$(".small_nav .show").slideUp(200);
			$(".small_nav .btn").removeClass("active");
			$this.next(".show").slideDown(200);
			$this.parent().addClass("active");
		}else{
			$this.next(".show").slideUp(200);
			$this.parent().removeClass("active");
		}
		
	})
function stopEvent(){ 
	var e=arguments.callee.caller.arguments[0]||event; 
	 if (e && e.stopPropagation) { 
	   e.stopPropagation(); 
	 } else if (window.event) { 
	   window.event.cancelBubble = true; 
	 } 
}


	


})