Jim Plush has release the latest version of his My-BIC Ajax/PHP framework today - version 0.6.2 - which sees the end of alerts() for debugging.
Secondly, the bigger change - the removal of alerts() for the debugging messages in applications. They've been replaced by a list of items with expandable labels. Here's an example of this new feature.
He makes the suggestion for a possible use of this new tool too - remote debugging by having a user/customer see the debug information and give you the results.