John's right. Frames are so horrible, the W3C stopped supporting them in HTML5.
If you want navigation that works well in all web devices & browsers, don't use Frames/Framesets.
Use a DW Template or Server-Side Includes for sitewide navigation.
John and Nancy,
A great BIG thank you for your direction. When I originally designed our class website a number of years ago, frames were much more popular. After reading up on creating templates, we'll soon be making the transition.... but first I need to sift through all the pages created through the years.