/* Simple AJAX Code-Kit (SACK) v1.6.1 */
/* ©2005 Gregory Wild-Smith */
/* www.twilightuniverse.com */
/* Software licenced under a modified X11 licence,
   see documentation or authors website for more details */

function sack(file) {
	this.xmlhttp = null;

	this.resetData = function() {
		this.method = "POST";
  		this.queryStringSeparator = "?";
		this.argumentSeparator = "&";
		this.URLString = "";
		this.encodeURIString = true;
  		this.execute = false;
  		this.element = null;
		this.elementObj = null;
		this.requestFile = file;
		this.vars = new Object();
		this.responseStatus = new Array(2);
  	};

	this.resetFunctions = function() {
  		this.onLoading = function() { };
  		this.onLoaded = function() { };
  		this.onInteractive = function() { };
  		this.onCompletion = function() { };
  		this.onError = function() { };
		this.onFail = function() { };
	};

	this.reset = function() {
		this.resetFunctions();
		this.resetData();
	};

	this.createAJAX = function() {
		try {
			this.xmlhttp = new ActiveXObject("Msxml2.XMLHTTP");
		} catch (e1) {
			try {
				this.xmlhttp = new ActiveXObject("Microsoft.XMLHTTP");
			} catch (e2) {
				this.xmlhttp = null;
			}
		}

		if (! this.xmlhttp) {
			if (typeof XMLHttpRequest != "undefined") {
				this.xmlhttp = new XMLHttpRequest();
			} else {
				this.failed = true;
			}
		}
	};

	this.setVar = function(name, value){
		this.vars[name] = Array(value, false);
	};

	this.encVar = function(name, value, returnvars) {
		if (true == returnvars) {
			return Array(encodeURIComponent(name), encodeURIComponent(value));
		} else {
			this.vars[encodeURIComponent(name)] = Array(encodeURIComponent(value), true);
		}
	}

	this.processURLString = function(string, encode) {
		encoded = encodeURIComponent(this.argumentSeparator);
		regexp = new RegExp(this.argumentSeparator + "|" + encoded);
		varArray = string.split(regexp);
		for (i = 0; i < varArray.length; i++){
			urlVars = varArray[i].split("=");
			if (true == encode){
				this.encVar(urlVars[0], urlVars[1]);
			} else {
				this.setVar(urlVars[0], urlVars[1]);
			}
		}
	}

	this.createURLString = function(urlstring) {
		if (this.encodeURIString && this.URLString.length) {
			this.processURLString(this.URLString, true);
		}

		if (urlstring) {
			if (this.URLString.length) {
				this.URLString += this.argumentSeparator + urlstring;
			} else {
				this.URLString = urlstring;
			}
		}

		// prevents caching of URLString
		this.setVar("rndval", new Date().getTime());

		urlstringtemp = new Array();
		for (key in this.vars) {
			if (false == this.vars[key][1] && true == this.encodeURIString) {
				encoded = this.encVar(key, this.vars[key][0], true);
				delete this.vars[key];
				this.vars[encoded[0]] = Array(encoded[1], true);
				key = encoded[0];
			}

			urlstringtemp[urlstringtemp.length] = key + "=" + this.vars[key][0];
		}
		if (urlstring){
			this.URLString += this.argumentSeparator + urlstringtemp.join(this.argumentSeparator);
		} else {
			this.URLString += urlstringtemp.join(this.argumentSeparator);
		}
	}

	this.runResponse = function() {
		eval(this.response);
	}

	this.runAJAX = function(urlstring) {
		if (this.failed) {
			this.onFail();
		} else {
			this.createURLString(urlstring);
			if (this.element) {
				this.elementObj = document.getElementById(this.element);
			}
			if (this.xmlhttp) {
				var self = this;
				if (this.method == "GET") {
					totalurlstring = this.requestFile + this.queryStringSeparator + this.URLString;
					this.xmlhttp.open(this.method, totalurlstring, true);
				} else {
					this.xmlhttp.open(this.method, this.requestFile, true);
					try {
						this.xmlhttp.setRequestHeader("Content-Type", "application/x-www-form-urlencoded")
					} catch (e) { }
				}

				this.xmlhttp.onreadystatechange = function() {
					switch (self.xmlhttp.readyState) {
						case 1:
							self.onLoading();
							break;
						case 2:
							self.onLoaded();
							break;
						case 3:
							self.onInteractive();
							break;
						case 4:
							self.response = self.xmlhttp.responseText;
							self.responseXML = self.xmlhttp.responseXML;
							self.responseStatus[0] = self.xmlhttp.status;
							self.responseStatus[1] = self.xmlhttp.statusText;

							if (self.execute) {
								self.runResponse();
							}

							if (self.elementObj) {
								elemNodeName = self.elementObj.nodeName;
								elemNodeName.toLowerCase();
								if (elemNodeName == "input"
								|| elemNodeName == "select"
								|| elemNodeName == "option"
								|| elemNodeName == "textarea") {
									self.elementObj.value = self.response;
								} else {
									self.elementObj.innerHTML = self.response;
								}
							}
							if (self.responseStatus[0] == "200") {
								self.onCompletion();
							} else {
								self.onError();
							}

							self.URLString = "";
							/* These lines were added by Alf Magne Kalleland ref. info on the sack home page. It prevents memory leakage in IE */

							delete self.xmlhttp['onreadystatechange'];
							self.xmlhttp=null;
							self.responseStatus=null;
							self.response=null;
							self.responseXML=null;
														
							break;
					}
				};

				this.xmlhttp.send(this.URLString);
			}
		}
	};

	this.reset();
	this.createAJAX();
}

var http_request = false;
function makePOSTRequest(url, parameters, visible) {
  http_request = false;
  if (window.XMLHttpRequest) { // Mozilla, Safari,...
     http_request = new XMLHttpRequest();
     if (http_request.overrideMimeType) {
     	// set type accordingly to anticipated content type
        //http_request.overrideMimeType('text/xml');
        http_request.overrideMimeType('text/html');
     }
  } else if (window.ActiveXObject) { // IE
     try {
        http_request = new ActiveXObject("Msxml2.XMLHTTP");
     } catch (e) {
        try {
           http_request = new ActiveXObject("Microsoft.XMLHTTP");
        } catch (e) {}
     }
  }
  if (!http_request) {
     alert('Cannot create XMLHTTP instance');
     return false;
  }

  if (visible==0)
  {
  	document.getElementById('belegung').style.display="none";
  }
  else if (visible==1)
  {
  	document.getElementById('buchen').style.display="none";
  }

  http_request.onreadystatechange = alertContents;
  http_request.open('POST', url, true);
  http_request.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
  http_request.setRequestHeader("Content-length", parameters.length);
  http_request.setRequestHeader("Connection", "close");
  http_request.send(parameters);
}

function alertContents() {
  if (http_request.readyState == 4) {
     if (http_request.status == 200) {
        //alert(http_request.responseText);
        result = http_request.responseText;
        document.getElementById('myspan').innerHTML = result;            
     } else {
        alert('There was a problem with the request.');
     }
  }
}

function get(obj) {
  var poststr = "von_tag=" + encodeURI( document.getElementById("von_tag").value ) +
                "&von_monat=" + encodeURI( document.getElementById("von_monat").value ) + 
                "&von_jahr=" + encodeURI( document.getElementById("von_jahr").value ) +
                "&anreise=" + encodeURI( document.getElementById("anreise").value ) + 
                "&bis_tag=" + encodeURI( document.getElementById("bis_tag").value ) + 
                "&bis_monat=" + encodeURI( document.getElementById("bis_monat").value ) + 
                "&bis_jahr=" + encodeURI( document.getElementById("bis_jahr").value ) +
                "&abreise=" + encodeURI( document.getElementById("abreise").value ) + 
                "&id=" + encodeURI( document.getElementById("id").value ) +
                "&was=" + encodeURI( document.getElementById("was").value );
  makePOSTRequest('belegungpruefen.php', poststr, 0);
}

function get2(obj) {
  var poststr = "datum_von=" + encodeURI( document.getElementById("datum_von").value ) +
                "&datum_bis=" + encodeURI( document.getElementById("datum_bis").value ) + 
                "&anreise=" + encodeURI( document.getElementById("anreise").value ) +
                "&abreise=" + encodeURI( document.getElementById("abreise").value ) + 
                "&wasgeb=" + encodeURI( document.getElementById("wasgeb").value ) + 
                "&art=" + encodeURI( document.getElementById("art").value ) + 
                "&organisation=" + encodeURI( document.getElementById("organisation").value ) +
                "&gruppe=" + encodeURI( document.getElementById("gruppe").value ) + 
                "&vorname=" + encodeURI( document.getElementById("vorname").value ) +
                "&nachname=" + encodeURI( document.getElementById("nachname").value ) +
                "&strasse=" + encodeURI( document.getElementById("strasse").value ) +
                "&plz=" + encodeURI( document.getElementById("plz").value ) +
                "&ort=" + encodeURI( document.getElementById("ort").value ) +
                "&land=" + encodeURI( document.getElementById("land").value ) +
                "&telefon=" + encodeURI( document.getElementById("telefon").value ) +
                "&email=" + encodeURI( document.getElementById("email").value ) +
                "&kinder=" + encodeURI( document.getElementById("kinder").value ) +
                "&erwachsene=" + encodeURI( document.getElementById("erwachsene").value ) +
                "&betreuer=" + encodeURI( document.getElementById("betreuer").value ) +
  				"&hausid=" + encodeURI( document.getElementById("hausid").value ) + 
  				"&huette=" + encodeURI( document.getElementById("huette").value ) + 
  				"&freieeingabe=" + encodeURI( document.getElementById("freieeingabe").value ) +
  				"&programmwunsch=" + encodeURI( document.getElementById("programmwunsch").value );
  	chkFormular();
  	if (document.getElementById("fail").value != 1)
  	{
  		makePOSTRequest('buchen2.php', poststr, 1);
  	}
}