function xmlhttpPost(strURL,id)
{
var xmlHttpReq = false;
var self = this;

// Mozilla/Safari
if (window.XMLHttpRequest)
{
self.xmlHttpReq = new XMLHttpRequest();
}

// IE
else if (window.ActiveXObject)
{
self.xmlHttpReq = new ActiveXObject("Microsoft.XMLHTTP");
}

self.xmlHttpReq.open('POST', strURL, true);
self.xmlHttpReq.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded');
self.xmlHttpReq.onreadystatechange = function() {

if (self.xmlHttpReq.readyState == 4)
{
updatepage(self.xmlHttpReq.responseText,id);
}

}

self.xmlHttpReq.send(null);

}

function updatepage(str,id)
{
document.getElementById(id).innerHTML = str;
}