Code modification for Pinnacle Cart platform

Various modifications to PHP shopping cart, Pinnacle Cart. ## Deliverables 1. [login to view URL] file needs to be changed to allow for customer to make tax deductible donations. 2. Same file also needs to have a checkbox that if checked will activate a coupon code for a percentage off of merchandise. 3. Header requires modification to include a small search box. 4. [login to view URL] needs script that will display a random image when loaded. A folder on the server will contain multiple images. The file modification should be able to use any file within specific folder. No additional code changes will be made to account for new files in the folder.