Reg ex match

[kwerk]

How would I match the URL in this

<a href="http://192.168.0.80/?cat=14&nbsp;" target="_blank">

I want to match only http://192.168.0.80/?cat=14 without the &nbsp;

This is what i have so far:

http:\/\/[^\"]+

 

[philldutton]

http:\/\/[^\"]+(?=&nbsp)