The end result I'm after is a JavaScript array containing a list of tag names that are used in the HTML document eg:
div, span, section, h1, h2, p, etc...
I want the list to be distinct and I'm not interested in tags within the <head>
of the document (but they can be there if it's a performance hog to exclude them).
This has to work in IE 6, 7, & 8 and I don't want to use jquery.
What would be the most efficient way of doing this?