>>You could allow parentheses in a url without allowing them in the part after the . ie not in .aspx
>>
>>
>>I think that would solve it
>
>I will take a look at this again. Over the years, I have tried to resolve that issue several times and I always found situations where the logic was not able to be applied.

Do you have any bnf ?

I am looking at http://www.ietf.org/rfc/rfc3986.txt and http://www.w3.org/Addressing/URL/5_BNF.html#z18

Thinking to use the first one and limiting it to http, www, ftp and mailto