A new feature in MySQL version 5.1.6 is the addition of events. These can be either a single event or a schedule, both of which can be given multiple commands to run.
First, you need to make sure that the event scheduler is running. To do this, open up MySQL query browser (or similar) and run the following MySQL command.
If the event scheduler you will see a row in the output that looks like this:
There is nothing more irritating than when you are typing out a long message in a text box and you accidentally move backwards, or clicking on a link and moving off page, therefore losing data you may have entered. There is a solution to stop this happening and it involves the onbeforeunload event.
Although not technically a fully supported event, onbeforeunload is run just before the page is unloaded out of cache. The onunload event occurs right after this, and it is too late by that point.