var xmlHttp;

	// call this function by createXMLHttpRequest();
	function createXMLHttpRequest() {
		if(window.ActiveXObject) {
			// this is for IE6
			xmlHttp = new ActiveXObject("Microsoft.XMLHTTP"); 
		}
		else if (window.XMLHttpRequest) {
			// for everything else, that doesn't use ActiveX for xmlhttp
			xmlHttp = new XMLHttpRequest(); 
		}
	}