var reqAJAX;
var tmrAJAX=3500;
function initAJAX()
{
	if(window.XMLHttpRequest) // IE7+, Firefox, Chrome, Opera, Safari
		reqAJAX=new XMLHttpRequest();
//	else if(window.ActiveXObject) // IE6-
//		reqAJAX=new ActiveXObject("Microsoft.XMLHTTP");
	else
		reqAJAX=-1;
}
function fireAJAX(uri,listener)
{
	if(reqAJAX!=-1)
	{
		reqAJAX.onreadystatechange=listener;
		reqAJAX.open("POST",uri,true);
		reqAJAX.send(null);
	}
}
initAJAX();