Talking browsers tend not to be java enabled and will not read drop down lists. Please provide an alternative - particularly where site navigation is concerned. When you have created your page, you may wish to run it through an accessibility checker. There are several of these available online, including ' Bobby '. Please keep this in mind if you plan to include images on your pages.
People are likely to look elsewhere if they are required to wait too long for the information.
Some of our web pages do not yet conform to all of the above guidelines. However, we are working towards full accessibility.