Check the article talking about ITEMSTATEs. Pretty sure you can sort of do this, ie. reusing an item.
The issue is that I am pretty sure having the actual pick up image on page is going to be very difficult to achieve, if at all possible.
You'll probs find it easier to have links that modify items, such as changing ITEMSTATE w/ scripting.
Obviously tho, since you are using items instead of variables, you might not want that.
Can item uses just be used instead? That would simply this, but again you wouldn't be picking the item up multiple times.
Hence my suggestion to check the articles, pretty sure they explain a lot regarding items, but it has been a while since I last read it.
(Or you can also wait for someone else to show up and tell you).
TL;DR
Pretty sure what you want is either really hard to do or not possible at all. Check the articles (or wait for someone more knowledgeable to come by).