there is a function to refresh the frame

function ABC()
{
window.parent.mainFrame.location.reload();
}

<input type="submit" name="submitvalue" value="send" onclick="setTimeout('ABC()',2000)">
<input type="button" value="refresh" onclick="setTimeout('ABC()',2000)">

it only works in button type, the submit type is failed.

how can i do to refresh the frame after 2 second after submit? thanks a lot.