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">
		<meta charset="utf-8" />

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

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

	<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" />
		<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
					// Do nothing
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.