// Put	ntupload

var ajax_requests = new Array();

function activex_based() {
	if(!window.ActiveXObject) return;
	try { return new ActiveXObject("Msxml2.XMLHTTP"); } catch(e) {}
	try { return new ActiveXObject("Microsoft.XMLHTTP"); } catch(e) {}
}

function nativexmlhttprequest_based() {
	if(!window.XMLHttpRequest) return;
	if(navigator.userAgent!='noxmlhttprequest')
		try { return new XMLHttpRequest(); } catch(e) {}
}

function new_request() {
	var i_i = -1;
	ajax_request = activex_based() ||  nativexmlhttprequest_based();
	if (ajax_request) {
		i_i= ajax_requests.length ;
		ajax_requests[i_i] = ajax_request;
	}
	return i_i;
}

function wrap_callback(call_back, i_i) {
	return "if (ajax_requests[" + i_i + "].readyState == 4 && ajax_requests[" + i_i + "].status == 200) { " + call_back + "(" + i_i + ");}";
}

function get_request(u_rl, call_back) {
	var i_i = new_request();
	if (i_i < 0) return i_i;
	ajax_requests[i_i].onreadystatechange =  new Function(wrap_callback(call_back, i_i));
	ajax_requests[i_i].open("GET", u_rl, true);
	ajax_requests[i_i].setRequestHeader("If-Modified-Since", "Sat, 1 Jan 2000 00:00:00 GMT");
	ajax_requests[i_i].send("");
	return i_i;
}

function post_urlencoded(u_rl, call_back, url_encoded) {
	var i_i = new_request();
	if (i_i < 0) return i_i;
	ajax_requests[i_i].onreadystatechange =  new Function(wrap_callback(call_back, i_i));
	ajax_requests[i_i].open("POST", u_rl, true);
	try { ajax_requests[i_i].setRequestHeader('Content-Type','application/x-www-form-urlencoded');} catch (error) {}; // IE does not have this method
	ajax_requests[i_i].send(url_encoded);
	return i_i;
}

function post_xml(u_rl, call_back, x_ml) {
	var i_i = new_request();
	if (i_i < 0) return i_i;
	ajax_requests[i_i].onreadystatechange =  new Function(wrap_callback(call_back, i_i));
	ajax_requests[i_i].open("POST", u_rl, true);
	try { ajax_requests[i_i].setRequestHeader('Content-Type','text/xml');} catch (e_rror) {}; // IE does not have this method
	ajax_requests[i_i].send(x_ml);
	return i_i;
}

function exec(i_i) {
	eval(ajax_requests[i_i].responseText) 
	ajax_requests[i_i] = null;
}

function alerter(i_i) {
	alert(ajax_requests[i_i].responseText);
	ajax_requests[i_i] = null;
}

function try_exec(i_i) {
	try { eval(ajax_requests[i_i].responseText) } catch(e_e) {} ;
	ajax_requests[i_i] = null;
}

function add_script_to_dom(script_filename) {
    var html_doc = document.getElementsByTagName('head').item(0);
    var j_s = document.createElement('script');
    j_s.setAttribute('language', 'javascript');
    j_s.setAttribute('type', 'text/javascript');
    j_s.setAttribute('src', script_filename);
    html_doc.appendChild(j_s);
    return false;
}

function decide_which_script_to_load(ajax_src, non_ajaxsrc) {
	if (activex_based() ||  nativexmlhttprequest_based())
		add_script_to_dom(ajax_src);
	else
		add_script_to_dom(non_ajaxsrc);
}