one thing to take into consideration when creating the graphics links is to make sure they are linking to a graphic, wheather it be a radar image, lightning image, webcam image etc etc..is for the size of the image not to be bigger than 320 by 240 in size, or somewhere near these..as If it is too large in size, it may not display on cell phone correctly or at all
on a side note ..I just went to your main weather website and noticed it is about 88 degrees there in MD....I find that really Odd considering we up here in the Northeast..massachusetts are chilly, cloudy and only in the 60's. it was beautiful here yesterday, but today and the rest of the week are going to be chilly, cloudy cool...maybe the cold front hasnt reached you there yet.
I also took a look at your cell phone page, as it is so far, and everything looks correctly displaying, although I did notice that your barometer at/near top is displaying in inches, and in the high/low section the barometer reading is in Millibars. not sure if you spotted this or intended this, but thought I would point it out.