Question: Can I have a calculator in my bookmarks file?
Answer: Yes, here is a bookmarklet calculator.
To preview the calculator, click on the above hyperlink. To close the calculator, click Cancel in the calculator prompt box. To add the calculator to your bookmarks, right-click on the hyperlink and choose Add bookmark or Add to Favorites (depending on your browser).
This bookmarklet has been tested with both NS4 and MSIE4.