fanian

//fix menu
	$(window).scroll(function(){
		var js_scroll = $(window).scrollTop();
		var SCROLL_MIN = 820;
		var SCROLL_MAX = 5480;
		if ( js_scroll > SCROLL_MIN ) { 
			$(".js-top-nav").addClass('fixed'); 
			if(js_scroll > SCROLL_MAX) {
				$(".js-top-nav").removeClass('fixed'); 
			};