As you can see, Scriptaculous, or Prototype doesn't support IE 5.x, which could lead to a few problems. Dojo on the other hand, supports IE 5.5 onwards, and includes safari & opera support.
Can somebody verify this? The wiki says it's a Prototype limitation rather than a Scriptaculous limitation, but Rico is built on Prototype and claims IE 5.5+ compatibility.
Speaking of Rico, did anyone check out the dynamically updating scrolling list example? That could be a pretty cool feature for the message list / address book widgets rather than using paging. Could add shortcut links to jump to specific points in the list as well (by last name, date, etc).
Also, another good thing is that it's ajax support automatically includes iframe backup, which means if a browser doesn't support xmlhttprequest, it still works through iframes. Scriptaculous/prototype don't have this as far as I can tell.
Are there any browsers out there that don't support the XMLHttpRequest object, yet still support the necessary DOM functionality for a rich client interface? i.e., it's a good marketing point, but does it have any import in the real world?
-j