The Timer object allows you execute events on the interval specified. 

The Interval and OnTimer events are equivalent to each other. Use the one you like most.

Members reference

Name	Syntax	Description
Interval	object.Interval = value variable = object.Interval	Specifies the timer's interval in milliseconds. Does not affect the timer if it is already running. You need to Stop and Start it again in order this value to take effect.
Tag	object.Tag = value variable = object.Tag	Sets an application specified tag - can be anything. You can use it if you have more than one timers and you have code that is called to handle similar operations. This will help you distinguish the timer that have invoked the operation.
Version	variable = object.Version	Returns the object version.
Start	object.Start([Interval])	Starts the timer. If you pass an Interval argument it has the same effect as setting the Interval property before calling Start.
Stop	object.Stop()	Stops the timer.
Interval	Sub object_Interval()	Fired each time the interval expires.
OnTimer	Sub object_OnTimer(sender)	Fired each time the interval expires. The parameter is the Timer object itself. Prefer this event if you want to use one code to handle different timers which still need to be distinguished at some point.