$(document).ready(function(){
	$("nav .menu").find("> li > a").click(function(event){
        event.preventDefault();
        //calculate destination place
        var dest=0;
        if($(this.hash).offset().top > $(document).height()-$(window).height()){
             dest=$(document).height()-$(window).height();
        }else{
             dest=$(this.hash).offset().top;
        }
        //go to destination
        $('html,body').animate({scrollTop:dest}, 2000,'swing');
    });
	
	$("nav .sub-menu a").click(function(event){
        event.preventDefault();
        //calculate destination place
        var dest=0;
        if($(this.hash).offset().top > $(document).height()-$(window).height()){
             dest=$(document).height()-$(window).height();
        }else{
             dest=$(this.hash).offset().top;
        }
        //go to destination
        $('html,body').animate({scrollTop:dest}, 2000,'swing');
    });
})