var xmlHttp;
var position;
var result_type;
var loader = "<img src='images/loading.gif' align='absmiddle'/><br><span class='Desc_text_intro'><strong>OS data</strong> processing! </span></center>";

// AJAX
function GetXmlHttpObject(handler){ 
	var objXMLHttp=null
	if (window.XMLHttpRequest){
		objXMLHttp=new XMLHttpRequest()
	} else if (window.ActiveXObject){
		objXMLHttp=new ActiveXObject("Microsoft.XMLHTTP")
	}
	return objXMLHttp;
}

function tabbook(input){
	type = input.getAttribute('title');
	position = input.getAttribute('rel');
	page = document.getElementById("page_type").getAttribute('title');
	var str = 'page=' + page + '&tab=' + type + '&' + (new Date()).getTime();
	var url = 'getbook.php'
	xmlHttp = GetXmlHttpObject();
	xmlHttp.onreadystatechange = stateChanged;
	
	xmlHttp.open("POST",url,true);
	//xmlHttp.send(null); // GET Method
	xmlHttp.setRequestHeader("Cache-Control","max-age=0, must-revalidate"); // Post urlencode
	xmlHttp.setRequestHeader("Content-Type","application/x-www-form-urlencoded; charset=UTF-8"); // Post urlencode
	xmlHttp.send(str); // POST Method	
}
function stateChanged(){ 
	if (xmlHttp.readyState == 4 || xmlHttp.readyState == "complete")
	{
		document.getElementById(position).innerHTML = xmlHttp.responseText;
	} else if (xmlHttp.readyState==1 || xmlHttp.readyState=="loading"){
		loading();
	}
}

function loading(){
	document.getElementById("book").innerHTML=loader;
}


//-->