title: Movement of scroll bar in drop down using mouse movements in Selenium Webdriver
body: <p>I am new to Selenium and I have been working on Selenium Webdriver. I have a huge list in a drop down and I want to move the scroll bar down using the click of a mouse. So, my question is "How to move scroll bar in drop down using mouse click in Selenium Webdriver?" . Any help would be great.</p>
  
  <p>Thank you in advance.</p>