I need a simple availability calendar system for holiday letting portals, showing dates as booked or available. This needs to be editable by the individual owner via their content update area [this is already up and running], and viewable via the public sites. An availability search across all calendars, filtered by criteria matching some fields in our accommodation db is also required. The server it runs on uses ColdFusion MX and mysql on Linux. We plan to upgrade to ColdFusion7 shortly, so a solution which will work both on 6.1 and 7 is vital.