Email Posting Twice

[sKunKbad]

I'd like to be able to use this javascript, because then the user doesn't have to see the lag of the mail processing script, but when I use it, the email gets sent twice for some reason. If I post to the mail processing script directly, then it works right. Actually, it's only Opera and IE6/IE7 that had the problem with the double posts. Firefox and Safari are OK. Any ideas?

 

<script type='text/javascript'>
	<!--
	var url = 'http://www.mysite.com/mailproc.php';
	var params = 'realname=<?php echo $realname; ?>&email=<?php echo $email; ?>&mesg=<?php echo $mesg; ?>&recipients=rbg';
	function createRequestObject() {
		var req;
		if(window.XMLHttpRequest){
			req = new XMLHttpRequest();
		} else if(window.ActiveXObject) {
			req = new ActiveXObject('Microsoft.XMLHTTP');
		} else {
			alert('There was an error while submitting your message. Please try a different contact method.');
		}
		return req;
	}
	var http = createRequestObject();
	http.open('POST', url, true);
	http.setRequestHeader('Content-type', 'application/x-www-form-urlencoded');
	http.setRequestHeader('Content-length', params.length);
	http.setRequestHeader('Connection', 'close');
	http.send(params);
	//-->
</script>

[sKunKbad]

I figured it out. This script was above some other javascript in the head section. I put it below, and everything is fine.