I have a form with a search field that I want to search two different databases depending on which radio button is selected. Below is the form I have for searching our library's online catalog. What I'd like to do is add a radio button to this form which would enable the same search box to search WorldCat, which has a different URL (http://firstsearch.oclc.org.cgcc-access.sage.eou.edu). What do I have to change in the following code to accomplish that? Thanks in advance.