// preview page navigation script 

(function($){ 
	//navigation menu 
	var sections=$("#authenty_preview>section");
	var headerOffset=$("header").outerHeight(true)-5;
	var extraOffset=Math.floor($(window).height()/4);
	var navMenuSel="#navigation_menu";
	var navMenuCurrSelClass="current-section";
	$.fn.NavigationMenu=function(speed,easing){
		var $this=$(this);
		var topPosition=$this.position().top;
		var updatePosition;
		$(window).scroll(function(){
			updatePosition=$(this).scrollTop()+topPosition;
			$this.stop(true,false).animate({top:updatePosition},speed,easing);
			$().NavigationMenuHighlight();
		});
	}
	$.fn.NavigationMenuHighlight=function(){
		var wScroll=$(window).scrollTop();
		sections.each(function(){
			var $this=$(this);
			var $id=$this.attr("id");
			var currMenuOption=$(navMenuSel+" a[href='#"+$id+"']");
			if(wScroll>=$this.offset().top-extraOffset && wScroll<$this.offset().top+($this.height()-extraOffset) && wScroll>headerOffset){
				currMenuOption.stop(true,true).addClass(navMenuCurrSelClass);
			}else{
				currMenuOption.stop(true,true).removeClass(navMenuCurrSelClass);
			}
		});
	}
})(jQuery);


jQuery.noConflict();
(function($){
	/* functions to run when content loads */
	$(window).load(function(){
		$("#navigation_menu a,a[href='#top'],a[rel='m_PageScroll2id']").mPageScroll2id();
		$("#navigation_menu a,a[href='#top'],a[rel='m_PageScroll2id']").address();
		$.address.externalChange(function(event){ 
			if(event.value){
				var eVal=event.value.replace("/","");
				if(eVal===""){
					eVal="top";
				}
				//calling "history" method of mPageScroll2id and pass jquery address value
				$().mPageScroll2id("history",{
					scrollTo:eVal
				});
			}
		});
		$("#navigation_menu").NavigationMenu(1300,"easeOutExpo");
	});
	/* functions to run when browser is resized */
	$(window).resize(function(){
		//your functions here
	});
})(jQuery);