PHP/Javascript/DHTML Web Calendar needed

We are looking to hire or license some technology from a developer who has already built something close to what we need. We require a calendar object to place on a web application page (written in PHP) that can display a month at a glance, in large size (ie. 500px x 500px), ie. NOT a popup calendar but a full size calendar, that can show events loaded from XML data on it. It would be ideal if the calendar could support text & graphical icons, and that events were hyperlinked. User should be able to navigate forward a month, and back a month, and the calendar should look aesthetically pleasing and ideally be able to be 'skinned'. Something like Google calendar would be ideal. The calendar must be a PHP5 class, and be entirely seperate to any code that it is incorporated in. My hope is that I can simply instantiate it, pass it data to display for the period, and tell it to show the month/year, and get back full content as text that can be incorporated in a Smarty tag for display to the user. CSS compatibility is required and it should be based on W3C browser code and IE/Firefox, etc. compatible. I do NOT want an ASP.NET solution. This will be hosted on Linux with Apache2 and PHP 5.1.6. My hope is that someone out there has something already written for this that I can license rather than have it developed from scratch. If you respond to this posting with a "We can do it" but no demo, don't even bother. I need to get this done right the first time and if you haven't done a calendar app like this before, you are not the right person for this job. So don't waste your time responding.