Help box text area for detail explanation of questions asked in Survey

Help box text area for detail explanation of questions asked in Survey

It would be great if there was a way to have a popup window appear when person hovers over a question, and window pops up to give user more details about the question being asked.  This would help to keep main question short and simple on screen for Survey use, but if user did not understand they just hover over the question and the details of pop up.