Thanks for the above ideas Lee. After much trial and error, it seems that the following url will conduct the searches obtain the results I need, where the imagemap is served up by FileMaker:
example:
<ahref="FMPro?-DB=NameOfDatabase&-Format=FormatPage.htm&-op=eq&FieldnameToSearch=ContentOfFieldToSearch&-find">This is a link</a>