title: Getting Webdriver ElementNotVisibleException when trying to click on sub-menu buttons that appear on hovering the mouse over menu buttons
body: <p>How to make selenium server 2.0 identify the sub-menu buttons that appear on hovering the mouse over menu buttons. For example, there is a menu button. On hovering the mouse over it, 2 sub-menu buttons appear. I want to click on the sub-menu button. How to make selenium server 2.0 identify the sub-menu button and click it?</p>