Good Advertising App

Hi Yall

I am presently using Blaskan and have a few questions

1) I really like Blaskan due to its simplicity and functionality and wonder if there is a way to have a theme similar to its functionality but have more design options. I like how easily Blaskan translates into mobile access and Ipad access

2) I have ads that run and wonder if there is a way to have ads fit the device, the site is being accessed with. For example, lets say I have a top banner on my site, that is large, and when visited with a laptop it retains its normal size, but when visited by a phone, it automatically changes to a mobile size ad