var fetching = false;
var site_url = '/';
var targetField = 'greyCont';

function showLoader(field_name) {
	fetchObject(field_name).innerHTML = '<img src="http://www.hotel666.de/img/loader.gif" />';
}

function setField(fieldName) {
	this.targetField = fieldName;
}

function ajaxHandler() {
	this.http_request = false;
	if(window.XMLHttpRequest) { // Mozilla, Safari,...
		this.http_request = new XMLHttpRequest();
		if(this.http_request.overrideMimeType) {
			this.http_request.overrideMimeType('text/xml');
		}
	} else if(window.ActiveXObject) { // IE
		try {
			this.http_request = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e) {
			try {
				this.http_request = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e) {}
		}
	}

	if(!this.http_request) {
		//alert('Ende :( Kann keine XMLHTTP-Instanz erzeugen');
		return false;
	}

	this.onreadystatechange =
		function(rdy_func_name) {
			fetching = (this.http_request.readyState != 4) ? true : false;
			this.http_request.onreadystatechange = rdy_func_name;
		}
	this.send =
		function(type, url, post_vars) {
					this.http_request.open(type, url);
					this.http_request.setRequestHeader("Content-Type", "application/x-www-form-urlencoded");
					this.http_request.setRequestHeader("Pragma", "no-cache");
					this.http_request.setRequestHeader("Cache-Control", "must-revalidate");
					this.http_request.setRequestHeader("If-Modified-Since", document.lastModified);
					this.http_request.setRequestHeader("X_EMERGE", "XMLHttpRequest");
					this.http_request.send(post_vars);
		}
}

function setFieldCont() {
	if(ajRequest) {
		if(ajRequest.http_request.readyState == 4 && ajRequest.http_request.status == 200 && ajRequest.http_request.responseText) {
			fetchObject(field_name).style.top = "200px";
			var splitRep = ajRequest.http_request.responseText.split(';');
			switch(splitRep[0]) { //ggf einfach 'action=blbla in der ajax.php zurückgeben und hier per doRequest verarbeitne
				case 'labelAddOk':
					fetching = false;
					doRequest('action=getSelectLabel&label_id='+splitRep[1], 'a_label_id', true);
					break;
				case 'locationAddOk':
					fetching = false;
					setSelectLocation(splitRep[1]);
					break;
				case 'chkUser':
					if(splitRep[1] != 'false') {
						fetchObject(field_name).innerHTML = splitRep[2];
						fetchObject('user_id').value = splitRep[1];
					}
					fetching = false;
					break;
				default:
					fetchObject(field_name).innerHTML = ajRequest.http_request.responseText;
					fetchObject(field_name).style.display = "";
					fetching = false;
					break;
			}
		}
	}
}

function initHandler() {
	ajRequest = new ajaxHandler();
	ajRequest.onreadystatechange(setFieldCont);
}

function chkBusy() {
	if(fetching) {
		alert('processing previous request');
		return true;
	}
}

function abortRequest() {
	fetching = false;
	this.http_request.abort();
}

//fetching the comment post form and processing the post data
function requestCform(sec,id,type) {
	if(!chkBusy()) {
		initHandler();
		field_name = "comment_sec";
		showLoader(field_name);
		ajRequest.send("POST", site_url + "ajax.php", "action=comment_form&comment_sec="+sec+"&parent_id="+id+"&form_type="+type);
		fetching = true;
	}
}

function postCform(sec,id) {
	if(!chkBusy()) {
		comment_textx = fetchObject("comment_text").value;
		if(comment_textx.replace(/ /g, '') == '') {
			alert("Bitte Text eingeben...");
			return false;
		}
		initHandler();
		field_name = "comment_sec";
		showLoader(field_name);
		ajRequest.send("POST", site_url + "ajax.php", "action=comment_post&comment_sec="+sec+"&parent_id="+id+"&comment_text="+urlencode(comment_textx));
		fetching = true;
	}
}

function delComment(sec,id) {
	if(!chkBusy()) {
		initHandler();
		field_name = "comment_sec";
		showLoader(field_name);
		ajRequest.send("POST", site_url + "ajax.php", "action=comment_del&comment_sec="+sec+"&comment_id="+id);
		fetching = true;
	}
}

//fetching the news archive
function requestArchive(year,month) {
	if(!chkBusy()) {
		initHandler();
		if(month == 0) {
			field_name = "news_year";
		} else {
			field_name = "news_month";
			fetchObject("head_path").innerHTML = "News Archiv - "+month_ger[month-1]+" "+year;
			/*fetchObject("icontent_box").style.display = "";*/
		}
		showLoader(field_name);
		ajRequest.send("POST", site_url + "ajax.php", "action=archive&news_year="+year+"&news_month="+month);
		fetching = true;
	}
}
//////////CALENDAR STUFF//////////

//fetching calendar entries
function requestEvents(time) {
	if(!chkBusy()) {
		initHandler();
		field_name = "hover";
		showLoader(field_name);
		fetchObject(field_name).style.visibility = "visible";
		ajRequest.send("POST", site_url + "ajax.php", "action=events&time="+time);
		fetching = true;
	}
}

function doRequest(postString, fieldName, tggleLightbox) {
	if(tggleLightbox) toggleLightbox();
	if(!chkBusy()) {
		initHandler();
		field_name = fieldName;
		showLoader(fieldName);
		ajRequest.send('POST', site_url + 'ajax.php', postString);
		fetching = true;
	}
}

function sendForm(frmname, fieldName) {
	frm = document.getElementById(frmname);
	var last;
	var str;
	for(var i = 0; i < frm.length; i++) {
		el = frm.elements[i];
		elname = el.name;
		if(el.name != last) {
			if(el.type == 'radio') {
				s_choice = document.getElementsByName(el.name);
				for(i=0; i<s_choice.length; i++) {
					if(s_choice[i].checked == true) {
						str = str+'&'+el.name+'='+urlencode(s_choice[i].value);
					}
				}
			} else if(el.type == 'checkbox') {
				if(fetchObject(el.name).checked) str = str+'&'+el.name+'='+urlencode(fetchObject(el.name).value);
			} else {
				str = str+'&'+el.name+'='+urlencode(fetchObject(el.name).value);
			}
			last = el.name;
		}
	}
	//alert(str);
	fieldName = (fieldName == 'default') ? this.targetField : fieldName;
	doRequest(str, fieldName, false);

}

function setSelectLocation(location_id) {
	if(!chkBusy()) {
		initHandler();
		field_name = 'a_location_id';
		showLoader(field_name);
		ajRequest.send('POST', site_url + 'ajax.php', 'action=getSelectLocation&location_id='+location_id);
		fetching = true;

	}
	toggleLightbox();
}
//alert test
function requestAlert() {
	if(!chkBusy()) {
		initHandler();
		field_name = "alert";
		showLoader(field_name);
		ajRequest.send("POST", site_url + "ajax.php", "action=alert");
		fetching = true;
	}
}


function postSec() {
	initHandler();
	field_name = "sectest";
	ajRequest.send("POST", site_url + "ajax.php", "action=sectest&bla=lol&lol=bla");
}