Here is a div with some links back to SearchLawrence.com on top of this div a transparent PNG has been placed using absolute positioning over the top. You can click on links through the transparent parts of the PNG. This method requires using CSS conditional statements for IE. Should be cross browser compatable (tested with IE, Firefox and Chrome).

• Homes for sale in Lawrence, KS
• Lawrence, KS Open Houses
• Real estate listings in Lawrence, KS
• Lawrence, KS Real Estate

The behavior is slightly differnt for IE, only areas where there is transparency in the image can be "clicked through" however in other browsers, the "pointer-events:none;" passes clicks regardless of image/div content.