var ajaxHttp = new Object();

ajaxHttp.onRequestComplete = function() { }

initializeAjaxHttpRequest();

function initializeAjaxHttpRequest() {
	try {
		// Firefox, Opera 8.0+, Safari
		ajaxHttp.request = new XMLHttpRequest();
	} catch (e) {
		// Internet Explorer
		try {
			ajaxHttp.request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				ajaxHttp.request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {
				alert("Your browser does not support AJAX!");
				ajaxHttp.request = null;
			}
		}
	}
	
	if( ajaxHttp.request != null ) {    
		ajaxHttp.getRequest = function(script) {
			initializeAjaxHttpRequest();
			ajaxHttp.request.open("GET", script, true);
			ajaxHttp.request.send(null);
			//return ajaxHttp.request.responseText;
		}
		
		ajaxHttp.postRequest = function(script, header) {
			initializeAjaxHttpRequest();
			ajaxHttp.request.open("POST", script, true);
			ajaxHttp.request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");    
			ajaxHttp.request.send(header);
			//return ajaxHttp.request.responseText;
		}
		
		ajaxHttp.request.onreadystatechange = function() {
			if(ajaxHttp.request.readyState == 4) {ajaxHttp.onRequestComplete();}
		}
	
		ajaxHttp.getResponseText = function() {
			if(ajaxHttp.request.status == 200) {return ajaxHttp.request.responseText;}
			else {return "";}
		}
	}
}