call image 64 and auto save php (script already written 2 save)

The project is very simple, written in php and js. just need simple auto save rather than button and some kind of src= for the image to be shown on the page from uploads folder. at the moment the image displayed is a data 64 encoded image, so needs to be a png. problem #1 calling the image so user can draw and its updated automatically every 10 seconds. file: index [login to view URL] line: 144 code: var wp = $("#wPaint").wPaint({ (calls a base 64 image from its source code instead of upload folder "[login to view URL]" problem #2 button should just be auto save instead. file: index [login to view URL] line: 138 code: