Q546 Why must I set a timeout delay when submitting a form before closing the window - what is this delay accomplishing?

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<form onSubmit="setTimeout('window.close',5000)">
<input type="submit" value="Close Window">
</form>

Because JavaScript has no way of knowing when the form has finished beinging submitted - therefore a guesstimate of the amount of time required for the form submit is chosen (5 seconds) and a time is set up to close the window after 5 seconds has passed. However, on a slow day the form may still not have been submitted within the 5 seconds, the closing of the window will interrupt the form submission and it will fail.

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