scrollHelper

 (function ($) {
     var mouseScroll = function (e) {
         try {
             var origEvent = e.originalEvent;
             origEvent.preventDefault();
         } catch (err) {
         }
     };
     var mouseWheel = function (e) {
         try {
             e = e || window.event;
             e.preventDefault();
             e.returnValue = false;
         } catch (err) {
         }
     };
     $.fn.preventOuterScroll = function () {
         var element = this.get(0);
         if (navigator.userAgent.toLowerCase().indexOf("firefox") > -1) {
             this.on("DOMMouseScroll", function (e) {
                 var origEvent = e.originalEvent;
                 element.scrollTop += origEvent.detail > 0 ? 60 : -60;
                 origEvent.preventDefault();
             });
         } else {
             element.onmousewheel = function (e) {
                 e = e || window.event;
                 element.scrollTop += e.wheelDelta > 0 ? -60 : 60;
                 e.preventDefault();
                 e.returnValue = false;
             };
         }
         return this;
     };
     $.fn.preventScroll = function () {
         var element = this.get(0);
         if (navigator.userAgent.toLowerCase().indexOf("firefox") > -1) {
             this.on("DOMMouseScroll", mouseScroll);
         } else {
             $(element).on("mousewheel", mouseWheel);
         }
         return this;
     };
     $.fn.liveScroll = function() {
         var element = this.get(0);
         if (navigator.userAgent.toLowerCase().indexOf("firefox") > -1) {
             this.off("DOMMouseScroll", mouseScroll);
         } else {
             $(element).off("mousewheel", mouseWheel);
         }
         return this;
     };
 }($));