// JavaScript Document
function ajax(handler){ 
	var objXmlHttp=null;

	if (window.ActiveXObject){
		var strName="Msxml2.XMLHTTP";
		if (navigator.appVersion.indexOf("MSIE 5.5")>=0){
			strName="Microsoft.XMLHTTP";
		} 
		try{ 
			objXmlHttp=new ActiveXObject(strName);
			objXmlHttp.onreadystatechange=handler;
			return objXmlHttp;
		} 
		catch(e){ 
			return false;
		} 
	} 
	else {
		try{ 
			objXmlHttp=new XMLHttpRequest();
			objXmlHttp.onload=handler;
			objXmlHttp.onerror=handler; 
			return objXmlHttp;
		}
		catch(e){
			return false;
		}
	}
}