var sendReq = getXmlHttpRequestObject();
var receiveReq = getXmlHttpRequestObject();

/**
	* Gets the browser specific XmlHttpRequest object
	*/
function getXmlHttpRequestObject()
{
	if(window.XMLHttpRequest)
	{
		return new XMLHttpRequest();
	}
	else if(window.ActiveXObject)
	{
		return new ActiveXObject("Microsoft.XMLHTTP");
	}
	else
	{
		return false;
	}
}