/* 
 * (c) CogWork. Website www.cogwork.se, e-mail: info@cogwork.se
 * 
 * Code from http://developer.mozilla.org/en/docs/AJAX:Getting_Started
 * If you want to POST data, you have to change the MIME type of the request
 * http_request.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
 * 
 */

function createHttpRequest() {

    var httpRequest = false;

	try {
		httpRequest = new XMLHttpRequest(); // Mozilla, Safari, Firefox...
	} catch(err1) {
		try {
			httpRequest = new ActiveXObject("Msxml2.XMLHTTP");  // Some versions IE
		} catch(err2) {
			try {
				httpRequest = new ActiveXObject("Microsoft.XMLHTTP");  // Some versions IE
			} catch(err3) {
				httpRequest = false;
			} 
		} 
	}
	
	relTopDirPathData = relTopDirPath + 'tools/data.xml.php?';

    return httpRequest;
}