Switch proxy for Opera & Netscape?

Does anyone know if there is an easy way to switch between different proxies, while using Opera and Netscape browsers, as easily as it is done with Firefox using the Switch Proxy extension? TIA.

 

opera will let you configure a proxy, see screen shot

 

Thanks Bigc, but I already know about how to change your proxy settings in Opera and Netscape. What I was looking for was an easier and quicker way to do it, like the Switch Proxy extension in FF.

The Switch Proxy extension in Firefox allows for very easy and fast switching between multiple proxy settings, for those who use them frequently. I was wondering if there is any way to do this with Opera and/or Netscape. Thanks again.