javascript - Scroll down not working using smoothscroll plugin -

i need make scrolling smoothly,so i've used plugin

sadly,it broke scroll down functionality.

i use function,for option on plugin:

$(function () {   $.srsmoothscroll({     // defaults     step: 55,     speed: 400,     ease: 'swing',     target: $('body'),     container: $(window)   }); }); 

does know problem? or should one?

update works if use this,but in chrome:

$(function () {   $.srsmoothscroll({     // defaults     step: 55,     speed: 400,     ease: 'swing',     target: $('#container'),     container: $('body')   }) }) 

my page has full width,height container id target plugin,and container body.