It's taken from Babylon Search: Web Search Results
This goes agains AdSense TOS for sure:
Competitive Ads and Services
In order to prevent user confusion, publishers may not display Google ads or search boxes on websites that also contain other ads or services formatted to use the same layout and colours as the Google ads or search boxes on that site. Although you may sell ads directly on your site, it is your responsibility to ensure that these ads cannot be confused with Google ads.
AdSense for search: A maximum of two Google AdSense for search boxes may be placed per page. Also, a single link unit or a search box, but no other Google ads, may be placed on pages with AdSense for search results. Queries must originate from users inputting data directly into the search box and cannot be modified. This includes pre-populating the search box with terms or hard-coding direct links to search results pages. AdSense for search code may not be integrated into any software application such as a toolbar.
An other indication that the big boys just do what they want...