Changes to CCS-Image-Gallery

Hi coders, I have a css-Image-Gallery (see attached). I need some changes to this file: I only want to change Image-Position. I need Thumbnails left and Main-Image right. Thats all. But note: This File works in ALL Browsers and need to work in all Browsers after changing the File. And no JavaScript is allowed. So use only css!! And I want exactly the same design. ONLY change Image-Positions. Will pay by PayPal after work is done.