How to add URL Encoding support in Regular Expression?
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I have a RE available at Fiddle (http://jsfiddle.net/JntuG/) that tries to capture the presence of script tag in user-supplied string. In particular, I tries to capture the letter 'r' of script tag. I have added support of Hex and Dec HTML entities of letter 'r' in Regular expression. Now I would like to add URL encoding support in the RE.

I want to add URL encode of letter 'r' in script i.e., %72. How can I do that? You can use the given fiddle to add support of %72. 

One more thing: Is it possible to add base64 encoding support in the given Fiddle? Thanks!