Know when viewing non-FBA item pages
目前為
let user know when looking at any non-FBA (not fulfilled by amazon) item page
runs at or after page loaded
checks for "fulfilled by amazon" or "ships from and sold by Amazon.com" text in page item-info sidebar
if neither are found, then it puts a frame around the amazon body with blinking text label above it, and puts a blinking text label in the item-info sidebar
this does not change anything else