Calendar showing availability of apartments/hotels

I'm looking for your recommendations for php scripts which will give me a web based calendar for showing 'vacant', 'not available' or 'availability unknown' states, based on days available for a particular apartment in the database - eg for 'not available' perhaps the day is crossed out or in red background, perhaps 'unknown' days are in yellow background etc. I've seen one that show perhaps the next 3-4 months on one page. I have done my own but I was looking for alternatives that I can adapt and plug into my database. Here's an example: http://www.latelets.com/cal.php3?month=6&year=2003&ct_ref=20981&type=branded I'm also looking for an easy way to update it, where you click on the day or an icon and it changes state from 'unknown' to 'available' to 'not available', which is javascript, but then you submit and it updates the database. Thanks for any suggestions. John                                            http://www.cantor.com CONFIDENTIAL: This e-mail, including its contents and attachments, if any, are confidential. If you are not the named recipient please notify the sender and immediately delete it. You may not disseminate, distribute, or forward this e-mail message or disclose its contents to anybody else. Copyright and any other intellectual property rights in its contents are the sole property of Cantor Fitzgerald. E-mail transmission cannot be guaranteed to be secure or error-free. The sender therefore does not accept liability for any errors or omissions in the contents of this message which arise as a result of e-mail transmission. If verification is required please request a hard-copy version. Although we routinely screen for viruses, addressees should check this e-mail and any attachments for viruses. We make no representation or warranty as to the absence of viruses in this e-mail or any attachments. Please note that to ensure regulatory compliance and for the protection of our customers and business, we may monitor and read e-mails sent to and from our server(s). For further important information, please read the Important Legal Information and Legal Statement at http://www.cantor.com/legal_information.html