The Anonymizer Privacy Button.
The Anonymizer Privacy Button is available in two versions, one
free and one based on a yearly fee. The free version offers basic but
privacy protection, some Web pages may not be available when the
protection is turned on. Both use a simple on-off button that's
visible in the browser window, so the privacy function is turned on with
mouse click. The cloaking hides your address, blocks cookies, Java,
lets you safely access and use websites that require cookies and URL encryption of your page requests so your ISP can't log them.