EyeWonder has launched a new push-down expandable ad format, reports iMedia (via MediaBuyerPlanner). The new format is available to advertisers on sites such as the CNN.com homepage.

EyeWonder's push-down ad slides webpage content out of the way upon expansion and back up upon contraction. The push-down starts with expanded instant play video.

On the user's initial view per day, the push-down ad starts at 300×250 pixels and plays in that expanded state for 15 seconds, then contracts to its standard 300×100 size while still playing. The format is available in both rich media and video ad versions.

In August, EyeWonder launched AdWonder, a platform that supports interactive banner ads and user-initiated video ads. It subsequently improved the platform's tracking and online reporting functionality.