function makeRequest(url, elemid) {
var http_request = false, elemid;
if (window.XMLHttpRequest) { // Mozilla, Safari, ...
http_request = new XMLHttpRequest();
if (http_request.overrideMimeType) {
http_request.overrideMimeType('text/xml');
//     
}
} 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('  :(     XMLHTTP ');
return false;
}
http_request.onreadystatechange = function() { alertContents(http_request, elemid); };
http_request.open('GET', url, true);
http_request.send(null);
}
function alertContents(http_request, elemid) {
if (http_request.readyState == 4) {
if (http_request.status == 200) {
document.getElementById(elemid).innerHTML = http_request.responseText;
} else {
alert('   .');
}
}
}

function openclose(html, id) {
	var element=document.getElementById(id);
	if(element.innerHTML==''){makeRequest(html, id)}else{element.innerHTML=''}
	}