IE response really slow

[carlitos_way]

Hi all, i'm working on an AJAX project that, when i use FF, is really fast, while when using IE is really slow.
these are my connection parameters: can you tell me if i can optimize them in any way, or if i'm doing something wrong? Thanks

/*	AJAX	*/
var http_request = false;

function makePOSTRequest(url, parameters) {
	http_request = false;

	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		http_request = new XMLHttpRequest();
		if (http_request.overrideMimeType) {
			// set type accordingly to anticipated content type
			//http_request.overrideMimeType('text/xml');
			http_request.overrideMimeType('text/html');
		}
	} else if (window.ActiveXObject) { // IE
		try {
			http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
			   http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}

	if (!http_request) {
		alert('Cannot create XMLHTTP instance');
		return false;
	}

	http_request.open('POST', url, true);
	http_request.onreadystatechange = alertContents;
	http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	http_request.setRequestHeader("Content-length", parameters.length);
	http_request.setRequestHeader("Connection", "close");
	http_request.send(parameters);
	return false;
}

[wukfit]

Hi,
The only 2 officially supported progids are MSXML2.XMLHTTP.3.0 and MSXML2.XMLHTTP.6.0 (although I fall back to Microsoft.XMLHTTP if the other two aren't available) - Using the right version of msxml

You might want to try that first... let me know.

Cheers,
WF