(function ($){
$(document).ready(function(){
var element='<div class="gp-back-to-top" id="gpToTop"><span></span></div>';
$('body').append(element);
var toTop=$('#gpToTop');
$(window).on('scroll', function(){
if($(window).scrollTop() > 250){
toTop.show();
}else{
toTop.hide();
}});
toTop.off('click').on('click',function(){
$('html, body').animate({
scrollTop: 0
}, 1000);
});
});
})(jQuery);