$( document ).ready( function() { 
    var jbOffset = $( '#header' ).offset(); 
    $( window ).scroll( function() { 
        if ( $( document ).scrollTop() > jbOffset.top ) { 
            $( '#header' ).addClass( 'jbFixed' ); 
            $( '#arrow' ).addClass( 'jbFixed2' ); 
        } else { 
            $( '#header' ).removeClass( 'jbFixed' ); 
            $( '#arrow' ).removeClass( 'jbFixed2' ); 
        } 
    });
    $('#back-top').click(function () {
        $('body,html').animate({
            scrollTop: 0
        }, 1000);
            return false;
    });
    $('#back-bottom').click(function () {
        $('body,html').animate({
            scrollTop: 
            $('#footer').offset().top
        }, 1000);
            return false;
    });
}); 

$(document).ready(function() {
    $("a.anchorLink").anchorAnimate();
});
jQuery.fn.anchorAnimate = function(settings) {
    settings = jQuery.extend({
        speed : 700
    }, settings);    
    
    return this.each(function(){
        var caller = this
        $(caller).click(function (event) {    
            event.preventDefault()
            var locationHref = window.location.href
            var elementClick = $(caller).attr("href");
            
            var destination = $(elementClick).offset().top-80;
            $("html:not(:animated),body:not(:animated)").animate({ scrollTop: destination}, settings.speed, function() {
                window.location.hash = elementClick -80
            });
            return false;
        })
    })
}