Images are all broken

[ergophobe]

When using this script, the image URL is generated as

//cdn.shopify.com/s/files/1/0642/0537/products/100_4774_medium.JPG

which is broken. If I'm on the product page, the image URL (correct) is
//cdn.shopify.com/s/files/1/0642/0537/products/100_4774.JPG.w560h847_medium.jpg?v=1409808948

[ergophobe]

This simply requires the match to be more specific so that if the string .jpg occurs in the middle of the string as well as the end, it matches only against the last one. So in the resizeImage function this

   var match  = src.match(/\.(jpg|jpeg|gif|png|bmp|bitmap|tiff|tif)(\?v=\d+)?/i);

becomes
var match = src.match(/.(jpg|jpeg|gif|png|bmp|bitmap|tiff|tif)($|?v=\d+)/i);