У вашего броузера проблема в совместимости с HTML5
This video demonstrates how to put a drop down list in an Excel spreadsheet. It uses a combo box. A more complete video, including a demonstration of interaction between Excel and Access databases, can be found at http://blanchard.ep.wisc.edu. This video was prepared as part of an online Masters program at the University of Wisconsin. Details can be found at http://mepp.engr.wisc.edu/