It's not designed to be used as a precise timing instrument. There are too many things that can affect it, processor speed, tick resolution and thread handling. If you are only targetting IE you'd be better off using the timing stuff provided by HTML+TIME.
What are you using the setTimeout to do?
thanks for your response.
it is ok.
I run movie (road safety using activemoviecontral) on company intranet.
I use settimeout when Movie finish then page move to next
page, there it will ask to confirm that user watch the movie or
not. but I am one more problem in java script.
How can move the variable by java script ?
I want that when movie finish then movie name move to next page