function GetXmlHttpObject() {
	var xmlHttp=null;
	try {
	xmlHttp=new XMLHttpRequest();
	} catch (e) {
		try {
			xmlHttp=new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			xmlHttp=new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	return (xmlHttp);
}

function my_request(show_content, url, parameters) {
	var xmlHttp = GetXmlHttpObject();
	xmlHttp.onreadystatechange = function() {
		if (xmlHttp.readyState==4&&xmlHttp.status==200) {
			document.getElementById(show_content).innerHTML=xmlHttp.responseText;
			xmlHttp=null;
		} else {
			document.getElementById(show_content).innerHTML="<img name='loading' src='images/loading.gif' />";
		}
	};
	xmlHttp.open('POST', url, true);
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.setRequestHeader("Content-length", parameters.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.send(parameters);
}
function postData(url, parameters) {
	xmlHttp = GetXmlHttpObject();
	xmlHttp.open('POST', url+".php", true);
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.setRequestHeader("Content-length", parameters.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.send(parameters);
}
function makedata(url, parameters) {
	var xmlHttp = GetXmlHttpObject();
	xmlHttp.onreadystatechange = function() {
		if (xmlHttp.readyState==4&&xmlHttp.status==200) {
			eval(xmlHttp.responseText);
			xmlHttp=null;
		}
	};
	xmlHttp.open('POST', url, true);
	xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlHttp.setRequestHeader("Content-length", parameters.length);
	xmlHttp.setRequestHeader("Connection", "close");
	xmlHttp.send(parameters);
}