drag problem

[edwardfxiao]

          <div style={{'height':'2000px'}}></div>
          <TimePicker
            onFocusChange={this.onFocusChange.bind(this)}
            onHourChange={this.onHourChange.bind(this)}
            onMinuteChange={this.onMinuteChange.bind(this)}
            onTimeChange={this.onTimeChange.bind(this)}
            onTimeQuantumChange={this.onTimeQuantumChange.bind(this)}
          />

If I do the code above, dragging became really hard.
That's because you are not updating the this.originX and this.originY after browser scrolled automatically.
The problem is more obvious on Safari and IE than chrome.