var activerequest = "0";
var fallback = 0;
var xmlhttp = false;
var lasturl = "";
var params = "";
var lastparams = "";
var passelement = "";
var passquestion = "";

// Next all the AJAX stuff

function checkactive(url, parameters) {
	if(activerequest == "0") makePOSTRequest(url, parameters);
	else setTimeout("checkactive('" + url + "', '" + parameters + "')", 500);
}

function makePOSTRequest(url, parameters) {
	params = parameters;
	xmlhttp = false;
	if (window.XMLHttpRequest) { // Mozilla, Safari,...
		xmlhttp = new XMLHttpRequest();
		if (xmlhttp.overrideMimeType) {
			// set type accordingly to anticipated content type
			xmlhttp.overrideMimeType('text/html');
		}
	} 
	else if (window.ActiveXObject) { // IE
		try {
			xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}
	if (!xmlhttp) {
		var fallback = 1;
		lowload();
		return false;
	}

	lasturl = url;
	lastparams = parameters;
	setTimeout("cancelchk('" + url + "', 'n')", 20000);
	if(url == "showquestion.inc.php" || url == "restorequestion.inc.php" || url == "restoreuser.inc.php" || url == "edituser.inc.php") xmlhttp.onreadystatechange = replacequestion;
	else if(url == "changeaccount.inc.php") xmlhttp.onreadystatechange = accountchanged;
	else if(url == "edit.inc.php") xmlhttp.onreadystatechange = editing;
	else if(url == "postanswer.inc.php") xmlhttp.onreadystatechange = showanswer;
	else if(url == "postquestion.inc.php") xmlhttp.onreadystatechange = questionsaved;
	else if(url == "delete.inc.php" || url == "deleteuser.inc.php") xmlhttp.onreadystatechange = deleted;
	else if(url == "topbar.inc.php") xmlhttp.onreadystatechange = topbar;
	else if(url == "updatesection.inc.php") xmlhttp.onreadystatechange = sectionupdate;
	else if(url == "updateuser.inc.php") xmlhttp.onreadystatechange = userupdate;
	else xmlhttp.onreadystatechange = showresponse;
	activerequest = "1";
//	setTimeout("cancelshow('" + url + "', '" + parameters + "')", 10000);
	xmlhttp.open('POST', url, true);
	xmlhttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
	xmlhttp.setRequestHeader("Content-length", parameters.length);
	xmlhttp.setRequestHeader("Connection", "close");
	xmlhttp.send(parameters);
	return false;
}

function cancelchk(passurl, userinit) {
	if(passurl == lasturl && activerequest == "1") {
		activerequest = "0";
		xmlhttp.abort();
		if(userinit == "n") msgshow("Could not connect to server!");
	}
}
function cancelclick() {
	var passurl = lasturl;
	activerequest = "1";
	cancelchk(passurl, "y");
}
function cancelshow(url, params) {
	if(url == lasturl && params == lastparams && activerequest == "1") msgshow("Option to cancel will appear here.");
}

function showresponse() {
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			activerequest = "0";
			var output = xmlhttp.responseText;
			msgshow(output);
		}
	}
}
function accountchanged() {
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			activerequest = "0";
			var output = xmlhttp.responseText;
			msgshow(output);
			setTimeout("updatetopbar()", 500);
		}
	}
}
function deleted() {
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			activerequest = "0";
			var output = xmlhttp.responseText.split("<flfaqdivider>");
			document.getElementById(output[0]).style.display = "none";
			msgshow(output[1]);
		}
	}
}
function editing() {
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			activerequest = "0";
			var output = xmlhttp.responseText.split("<flfaqdivider>");
			var part = output[1];
			var element = output[0];
			document.getElementById(part + '[' + element + ']').innerHTML = output[2];
		}
	}
}
function replacequestion() {
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			activerequest = "0";
			var output = xmlhttp.responseText.split("<flfaqdivider>");
			document.getElementById(output[0]).innerHTML = output[1];
		}
	}
}
function showanswer() {
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			activerequest = "0";
			var output = xmlhttp.responseText.split("<flfaqdivider>");
			if(passelement != "") {
				loadquest(passelement, passquestion);
				passelement = "";
			}
			else if(document.getElementById('mostrec')) {
				reloadsec('mostrec');
				reloadsec('unansw');
			}
			else loadquest(output[0], output[1]);
			msgshow(output[2]);
		}
	}
}
function questionsaved() {
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			activerequest = "0";
			var output = xmlhttp.responseText;
			document.getElementById('newquestion').value = "";
			document.getElementById('newdetails').value = "";
			if(passelement != "") {
				loadquest(passelement, passquestion);
				passelement = "";
			}
			else if(document.getElementById('unansw')) reloadsec('unansw');
			msgshow(output);
		}
	}
}
function sectionupdate() {
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			activerequest = "0";
			var output = xmlhttp.responseText.split("<flfaqdivider>");
			document.getElementById(output[0]).innerHTML = output[1];
			document.getElementById('tot' + output[0]).innerHTML = output[2];

		}
	}
}
function topbar() {
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			activerequest = "0";
			document.getElementById('infobar').innerHTML = xmlhttp.responseText;
		}
	}
}
function userupdate() {
	if (xmlhttp.readyState == 4) {
		if (xmlhttp.status == 200) {
			activerequest = "0";
			var output = xmlhttp.responseText.split("<flfaqdivider>");
			restoreuser(output[0], output[1]);
			msgshow(output[2]);

		}
	}
}

// Customised stuff

function changeaccount() {
	shaccountbox('hide');
	var newname = encodeURIComponent(document.getElementById('newname').value);
	var curpass = encodeURIComponent(document.getElementById('curpass').value);
	var newpass = encodeURIComponent(document.getElementById('newpass').value);
	var newpass2 = encodeURIComponent(document.getElementById('newpass2').value);
	var newoffset = encodeURIComponent(document.getElementById('newoffset').value);
	if(document.getElementById('newemail').checked == true) var newemail = "1";
	else var newemail = "0";
	checkactive('changeaccount.inc.php', 'newname=' + newname + '&curpass=' + curpass + '&newpass=' + newpass + '&newpass2=' + newpass2 + '&newemail=' + newemail + '&newoffset=' + newoffset);

}

function deleteconfirm(elementid, questionid) {
	checkactive('delete.inc.php', 'questionid=' + questionid + '&elementid=' + elementid);
}
function deletequestion(elementid, questionid) {
	msgshow("To confirm you wish to delete this question, please click <a href=\"#\" onclick=\"deleteconfirm('" + elementid + "', '" + questionid + "'); return false;\">here</a>.");
}
function deleteuser(elementid, userid) {
	msgshow("To confirm you wish to delete this user, please click <a href=\"#\" onclick=\"deleteuserconfirm('" + elementid + "', '" + userid + "'); return false;\">here</a>.");

}
function deleteuserconfirm(elementid, userid) {
	checkactive('deleteuser.inc.php', 'uid=' + userid + '&elementid=' + elementid);
}
function edituser(elementid, userid) {
	checkactive('edituser.inc.php', 'uid=' + userid+ '&elementid=' + elementid);
}
function editexisting(elementid, questionid, editpart) {
	checkactive('edit.inc.php', 'questionid=' + questionid + '&elementid=' + elementid + '&editpart=' + editpart);
}
function loadquest(elementid, questionid) {
	checkactive('showquestion.inc.php', 'questionid=' + questionid + '&elementid=' + elementid);
}
function restorequestion(elementid, questionid) {
	checkactive('restorequestion.inc.php', 'questionid=' + questionid + '&elementid=' + elementid);
}
function restoreuser(elementid, userid) {
	checkactive('restoreuser.inc.php', 'uid=' + userid + '&elementid=' + elementid);
}

function postanswer(elementid, questionid) {
	var answer = encodeURIComponent(document.getElementById('answer[' + questionid + ']').value);
	var tags = encodeURIComponent(document.getElementById('tags[' + questionid + ']').value);
	checkactive('postanswer.inc.php', 'questionid=' + questionid + '&elementid=' + elementid + '&answer=' + answer + '&tags=' + tags);
}

function postquestion() {
	var question = encodeURIComponent(document.getElementById('newquestion').value);
	var details = encodeURIComponent(document.getElementById('newdetails').value);
	shquestionbox('hide');
	checkactive('postquestion.inc.php', 'question=' + question +  '&details=' + details);
}


function reloadsec(section) {
	checkactive('updatesection.inc.php', 'section=' + section);
}

function saveedit(elementid, questionid, editpart) {
	if(editpart == "question") {
		passelement = elementid;
		passquestion = questionid;
		var question = encodeURIComponent(document.getElementById('newquestion[' + elementid + ']').value);
		var details = encodeURIComponent(document.getElementById('newdetails[' + elementid + ']').value);
		checkactive('postquestion.inc.php', 'edit=1&questionid=' + questionid + '&question=' + question + '&details=' + details);
	}
	else if(editpart == "answer") {
		passelement = elementid;
		passquestion = questionid;
		var answer = encodeURIComponent(document.getElementById('newanswer[' + elementid + ']').value);
		checkactive('postanswer.inc.php', 'edit=1&questionid=' + questionid + '&answer=' + answer);
	}
	else if(editpart == "tags") {
		passelement = elementid;
		passquestion = questionid;
		var tags = encodeURIComponent(document.getElementById('newtags[' + elementid + ']').value);
		checkactive('postanswer.inc.php', 'edit=1&questionid=' + questionid + '&tags=' + tags);
	}
}

function sendemail(user) {
	var subject = encodeURIComponent(document.getElementById('subject').value);
	var message = encodeURIComponent(document.getElementById('message').value);
	document.getElementById('sendemail').style.display = "none";
	checkactive('sendmessage.inc.php', 'userto=' + user +  '&subject=' + subject + '&message=' + message);
}
function updatetopbar() {
	checkactive('topbar.inc.php', '');
}
function updateuser(elementid, userid) {
	var newname = encodeURIComponent(document.getElementById('newname[' + elementid + ']').value);
	var newoffset = encodeURIComponent(document.getElementById('newoffset[' + elementid + ']').value);
	if(document.getElementById('newview[' + elementid + ']').checked == true) var newview = "1";
	else var newview = "0";
	if(document.getElementById('newask[' + elementid + ']').checked == true) var newask = "1";
	else var newask = "0";
	if(document.getElementById('newanswer[' + elementid + ']').checked == true) var newanswer = "1";
	else var newanswer = "0";
	if(document.getElementById('newedit[' + elementid + ']').checked == true) var newedit = "1";
	else var newedit = "0";
	if(document.getElementById('newnotify[' + elementid + ']').checked == true) var newnotify = "1";
	else var newnotify = "0";
	var poststr = "elementid=" + elementid + "&uid=" + userid + "&newname=" + newname + "&newview=" + newview + "&newask=" + newask + "&newoffset=" + newoffset + "&newanswer=" + newanswer + "&newedit=" + newedit + "&newnotify=" + newnotify;
	if(document.getElementById('newverify[' + elementid + ']')) {
		if(document.getElementById('newverify[' + elementid + ']').checked == true) poststr += "&newverify=1";
	}
	checkactive('updateuser.inc.php', poststr);
}

function shaccountbox(action) {
	if(action == "show") {
		document.getElementById('myaccountwrap').style.display = "block";
		document.getElementById('postquestionwrap').style.display = "none";
	}
	else document.getElementById('myaccountwrap').style.display = "none";
}

function shquestionbox(action) {
	if(action == "show") {
		document.getElementById('postquestionwrap').style.display = "block";
		document.getElementById('myaccountwrap').style.display = "none";
	}
	else document.getElementById('postquestionwrap').style.display = "none";
}

// And the message bar

function msgshow(message) {
	var curmarg = document.getElementById('msgbar').style.marginTop;
	if(curmarg == "-24px" || curmarg == "") {
		document.getElementById('msgbar').innerHTML = message;
		msgin();
		setTimeout("msgout()", 7000);
	}
	else {
		message = message.replace(/\'/g, "\\'");
		setTimeout("msgshow('" + message + "')", 1000);
	}
}
function msgin() {
	var time = 0;
	for(var i = -23; i <= 0; i++) {
		setTimeout("document.getElementById('msgbar').style.marginTop = '" + i + "px'", time);
		time = time + 10;
	}
}
function msgout() {
	var time = 0;
	for(var i = -1; i >= -24; i = i - 1) {
		setTimeout("document.getElementById('msgbar').style.marginTop = '" + i + "px'", time);
		time = time + 10;
	}
}