Got it working. Thanks for the input here and for the folks on MacWeather.com. One of those guys tweaked the existing script so the iPad is now excluded before I even got to trying detectmobilebrowsers.mobi. There's a Flash moon phase image that doesn't work, but I still prefer the web version on the iPad to the mobile version.
<!-- Begin Script -->
<!-- End Script -->
Thanks again for all the help. Even though I used another solution, I found additional HTML resources that will come in handy in the future.