Used to create a short cut to the top of the page if the user scrolls down

scroll_to_top.js

/*
Used to create a short cut to the top of the page if the user scrolls down. jQuery is needed.

Required: 
Create a div with id="go-to-top" with a nested anchor link.
Place scroll_to_top function inside doc ready(). 
Place a css condition tag for lte IE9 to set #go-to-top to display:none;  
*/

function scroll_to_top() {
    $(window).scroll(function () {
        if ($(this).scrollTop() > 100) {
            $('#go-to-top').stop().animate({
                bottom: '20px'
            }, 500);
        }
        else {
            $('#go-to-top').stop().animate({
                bottom: '-100px'
            }, 500);
        }
    });
    $('#go-to-top').click(function () {
        $('html, body').stop().animate({
            scrollTop: 0
        }, 1200, function () {
            $('#go-to-top').stop().animate({
                bottom: '-100px'
            }, 500);
        });
    });
}