function getXMLHttpRequest() {
	var xhr = null;
	if(window.XMLHttpRequest) xhr = new XMLHttpRequest();
	else if(window.ActiveXObject) {
		try {
			xhr = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			xhr = new ActiveXObject("Microsoft.XMLHTTP");
		}
	}
	else xhr = false;
	return xhr;
}

function nodeCleaner(n) {
	if(!n.data.replace(/\s/g,'')) n.parentNode.removeChild(n);
}