Surya Pratap Singh

Thanks @el-o, I was using minified version. Based on your idea, I changed [jquery.datetimepicker.full.min.js]([https://github.com/xdan/datetimepicker/blob/master/build/jquery.datetimepicker.full.min.js]) code as: Replaced this line: `r=Math.max(0,f-n);` by: `r=Math.abs(parseInt(o.css('marginTop'),10));r=r-(e.deltaY*20);`