code: function ( e ){
  
          //e.preventDefault();
          //e.stopPropagation();
  
          if( this.lockwheel || !this.isScroll ) return;
  
          //this.onWheel = true;
  
          var x = e.clientX;
          var px = this.content.getBoundingClientRect().left;
  
          if(x<px) return;
          if(x>(px+this.width)) return;
  
          var delta = 0;
          if(e.wheelDeltaY) delta = -e.wheelDeltaY*0.04;
          else if(e.wheelDelta) delta = -e.wheelDelta*0.2;
          else if(e.detail) delta = e.detail*4.0;
  
          this.py += delta;
  
          this.update( this.py );
  
      }
docs: Wheel event