function createRequestObject(){
	var req;
	if(window.XMLHttpRequest){
		// Firefox, Safari, Opera...
		req = new XMLHttpRequest();
	} else if(window.ActiveXObject){
		// Internet Explorer 5+
		req = new ActiveXObject("Microsoft.XMLHTTP");
	}
	return req;
}

function timerAppDiv(btn){
	appdivtimer = setTimeout("grabAppDiv(" + btn + ");",100);
}

function killAppDiv(){
	try{
		clearTimeout(appdivtimer);
	}catch(er){
		
	}
}

function grabAppDiv(btn){
	// Open PHP script for requests
	var http = createRequestObject();
	for (i=1; i<=4; i++){
		if (i == btn){
			document.getElementById('btn_' + i).style.background = "url(/images/banner_btn-over.jpg) no-repeat";
		}else{
			document.getElementById('btn_' + i).style.background = "url(/images/banner_btn.jpg) no-repeat";
		}
	}
	http.open('get', location.pathname + '?btn=' + btn);
	http.onreadystatechange = function(){
		if(http.readyState == 4 && http.status == 200){
			// Text returned FROM PHP script
			var response = http.responseText;
			if(response){
				// UPDATE ajaxTest content
				document.getElementById('appdiv').innerHTML = response;
			}
		}
	};
	http.send(null);
}

function cookieAppDiv(btn){
	document.cookie = "appdiv=" + btn;
	return true;
}