Have form autosubmit when OK pressed on dialog box (HTML/Java/PHP)

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Have form autosubmit when OK pressed on dialog box (HTML/Java/PHP)

Twinbird

Hello,

I have a page (warning2.html) that is loaded via a PHP script. When the page loads, a popup box/confirm dialog appears. If 'Cancel' is pressed I want the page to do nothing (just disappear). And if 'Ok' is pressed I want the page to submit an HTML form. Here is my code:

<!DOCTYPE html>
<html lang="en">
	<head>
		<meta charset="utf-8" />

	<title>warning</title>
	<meta name="description" content="" />
	<meta name="author" content="" />

	<meta name="viewport" content="width=device-width; initial-scale=1.0" />
</head>

<body onload="confirmAdd()">

	<form name="myForm" id="myForm" action="" method="post">		
		<input type="hidden" name="gradname" value="<?php echo $_POST['gradname']; ?>" />
		<input type="hidden" name="research" value="<?php echo $_POST['research']; ?>" />
		<input type="hidden" name="showAllMeetings" value="<?php echo $_POST['showAllMeetings']; ?>" />
		<input type="hidden" name="time" value="<?php echo $_POST['time']; ?>" />
		<input type="hidden" name="addConfirm" value="yes" />
	</form>

	<script type="text/javascript">
		function confirmAdd()
		{
			var conf = confirm("You already have a meeting scheduled for <?php echo $_POST['time']; ?>. Continue anyway?");
			if(conf == true)
			{
				// Submit form to add meeting
				document.myForm.submit();
			}
			else
			{
				// Do nothing
			}
		}
	</script>
</body>
</html>

This code seems to work fine, except the form doesn't seem to be submitted when I click 'Ok' (conf = true).
Please let me know what I can do.

Thanks,

Twin