function ajaxInit() {
	var xmlhttp ;
	try {
		xmlhttp = new XMLHttpRequest() ;
	} catch (ee) {
		try {
			xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
		try {
			 xmlhttp = new ActiveXObject ("Microsoft.XMLHTTP");
		} catch (E) {
			xmlhttp = false;
		}
	}
	}
	return xmlhttp ;
}