WHY DOES NOT IT WORK ###
Let me get it right for you ...
since iframes or objects are designed as a simple wormhole from your site to the requested source, they have their own functionality and objects!
There are many tricks you can play to determine the axis of the cursor without being able to interact with the wormhole , but if you want to interact with it, there are other ways ...
HOW TO GET JOB ###
one of them is the good old ajax , using it, you can load the entire site on a div and do even more than you can on the wormholes! since with ajax you split a web page into skeletons, you can not only get your X and Y, you can even personalize the page =)
since this is ajax, you can go crazy and create your own search field and get only the results and links from the desired search engine (since you project) OR , you can just load the entire page on a div or any other element.
if you and XML don't get along as if I don't, JQUERY can lend a hand
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