We have a number of advertising opportunities available.
Here's a few examples: (Width x Height in pixels)
Top Banner Ad: 440 x 74 (this ad size cannot be changed)
Left Banner Ad: 160 x 400 (width must remain at 160, but height can be changed)
Right Banner Ad: 140 x whatever (width must remain 140, but height is flexible)
Horizontal Ads: 720 x 100 (width must be 720, but height can vary)