var xmlHttp=createXmlHttpRequestObject();
function createXmlHttpRequestObject() {
	var xmlHttp;
	if (window.ActiveXObject) {
		try	{
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP");
		} catch (e) {
			xmlHttp = false;
		}
	} else {
		try	{
			xmlHttp = new XMLHttpRequest();
		} catch (e) {
			xmlHttp = false;
		}
	}
	if (xmlHttp) {
		return xmlHttp;
	} else {
		alert("Error creating the XMLHttpRequest object.");
	}
}