Some links go to my website instead of canvas page
I'm having trouble keeping my canvas page from "escaping" to my website.
For example, when looking at a list of node teasers on the canvas page, if you click the node title or "Read More", it stays on the canvas page and loads the full node. But if you click on any links I added to the body of my node...for example an image that links to "/node/37", then when clicking on that link on the canvase page, it leaves facebook and takes you to that node on my website.
What do you suppose I could do to change this? I would like the option of having some links go to my website but most links staying in the canvas page.