Hey all!

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I'm trying to do something unorthodox for a personal project. I am parsing the DOM from a web page and trying to highlight different HTML elements in Firefox as the cursor is over them. I have written a program that knows what elements of different classes are on screen, but I cannot get my app to draw a simple outline around an element (for example).

I was wondering if anybody could point me in the direction of a toolset that could be used for such things. Thanks in advance!