<select> elements always return scrollTop of 0
Opera always reports a scrollTop value of 0 for <select> elements, no matter how much they are scrolled.
IE6 displays this same behaviour; however, all of IE7, Mozilla and WebKit report an accurate scrollTop value for <select> elements.
In addition, Opera is the only one of these browsers which does not scroll the <select> element in response to setting the scrollTop property to a specific value.
the scrollTop value of the select element.
the scrollTop value of the select element to 85.