recommendation for validator

When I put <img src=""> in my HTML documents, is there any reason this URL cannot refer to a script or program that checks HTTP_REFERER for validity and returns true and false graphics accordingly? This real-time validation would be valuable for large websites where it may not be practical to check manually on every page. 

Sincerely yours,
Aaron Grahn

Received on Sunday, 11 August 2002 18:12:17 UTC