jQuery_Project/assets/js/main.js

var amountScrolled = 300;
$(document).ready( function(){
    $(window).scroll(function() {
		if ( $(window).scrollTop() > amountScrolled ) {
			$('#botom-corner').fadeIn('slow');
		} else {
			$('#botom-corner').fadeOut('slow');
		}
	});
} );

$(function(){
     $('#go-top').click(function() {
     if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'')
         && location.hostname == this.hostname) {
             var $target = $(this.hash);
             $target = $target.length && $target || $('[name=' + this.hash.slice(1) +']');
             if ($target.length) {
                 var targetOffset = $target.offset().top;
                 $('html,body').animate({scrollTop: targetOffset}, 1000);
                 return false;

            }

       }

   });

});