function urlencode( str ) {
    // http://kevin.vanzonneveld.net
    // +   original by: Philip Peterson
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: AJ
    // +   improved by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +      input by: travc
    // +      input by: Brett Zamir (http://brett-zamir.me)
    // +   bugfixed by: Kevin van Zonneveld (http://kevin.vanzonneveld.net)
    // +   improved by: Lars Fischer
    // +      input by: Ratheous
    // %          note 1: info on what encoding functions to use from: http://xkr.us/articles/javascript/encode-compare/
    // *     example 1: urlencode('Kevin van Zonneveld!');
    // *     returns 1: 'Kevin+van+Zonneveld%21'
    // *     example 2: urlencode('http://kevin.vanzonneveld.net/');
    // *     returns 2: 'http%3A%2F%2Fkevin.vanzonneveld.net%2F'
    // *     example 3: urlencode('http://www.google.nl/search?q=php.js&ie=utf-8&oe=utf-8&aq=t&rls=com.ubuntu:en-US:unofficial&client=firefox-a');
    // *     returns 3: 'http%3A%2F%2Fwww.google.nl%2Fsearch%3Fq%3Dphp.js%26ie%3Dutf-8%26oe%3Dutf-8%26aq%3Dt%26rls%3Dcom.ubuntu%3Aen-US%3Aunofficial%26client%3Dfirefox-a'
                             
    var hash_map = {}, unicodeStr='', hexEscStr='';
    var ret = (str+'').toString();
    
    var replacer = function(search, replace, str) {
        var tmp_arr = [];
        tmp_arr = str.split(search);
        return tmp_arr.join(replace);
    };
    
    // The hash_map is identical to the one in urldecode.
    hash_map["'"]   = '%27';
    hash_map['(']   = '%28';
    hash_map[')']   = '%29';
    hash_map['*']   = '%2A';
    hash_map['~']   = '%7E';
    hash_map['!']   = '%21';
    hash_map['%20'] = '+';
    hash_map['\u00DC'] = '%DC';
    hash_map['\u00FC'] = '%FC';
    hash_map['\u00C4'] = '%D4';
    hash_map['\u00E4'] = '%E4';
    hash_map['\u00D6'] = '%D6';
    hash_map['\u00F6'] = '%F6';
    hash_map['\u00DF'] = '%DF';
    hash_map['\u20AC'] = '%80';
    hash_map['\u0081'] = '%81';
    hash_map['\u201A'] = '%82';
    hash_map['\u0192'] = '%83';
    hash_map['\u201E'] = '%84';
    hash_map['\u2026'] = '%85';
    hash_map['\u2020'] = '%86';
    hash_map['\u2021'] = '%87';
    hash_map['\u02C6'] = '%88';
    hash_map['\u2030'] = '%89';
    hash_map['\u0160'] = '%8A';
    hash_map['\u2039'] = '%8B';
    hash_map['\u0152'] = '%8C';
    hash_map['\u008D'] = '%8D';
    hash_map['\u017D'] = '%8E';
    hash_map['\u008F'] = '%8F';
    hash_map['\u0090'] = '%90';
    hash_map['\u2018'] = '%91';
    hash_map['\u2019'] = '%92';
    hash_map['\u201C'] = '%93';
    hash_map['\u201D'] = '%94';
    hash_map['\u2022'] = '%95';
    hash_map['\u2013'] = '%96';
    hash_map['\u2014'] = '%97';
    hash_map['\u02DC'] = '%98';
    hash_map['\u2122'] = '%99';
    hash_map['\u0161'] = '%9A';
    hash_map['\u203A'] = '%9B';
    hash_map['\u0153'] = '%9C';
    hash_map['\u009D'] = '%9D';
    hash_map['\u017E'] = '%9E';
    hash_map['\u0178'] = '%9F';
    
    // Begin with encodeURIComponent, which most resembles PHP's encoding functions
    ret = encodeURIComponent(ret);
 
    for (unicodeStr in hash_map) {
        hexEscStr = hash_map[unicodeStr];
        ret = replacer(unicodeStr, hexEscStr, ret); // Custom replace. No regexing
    }
    
    // Uppercase for full PHP compatibility
    return ret.replace(/(\%([a-z0-9]{2}))/g, function(full, m1, m2) {
        return "%"+m2.toUpperCase();
    });
  }

  function anzeigen( targetId ){
    if (document.getElementById){
      target = document.getElementById(targetId);
      target.style.display = "";
    }
  }

  function verbergen( targetId ){
    if (document.getElementById){
      target = document.getElementById(targetId);
      target.style.display = "none";
    }
  }

  function setErrorMsg( msg ) {
    if (document.getElementById){
      target = document.getElementById("sendformresult");
      target.className = "sendform_error";
      target.innerHTML = msg;
      anzeigen("sendformresult");
    }
  }

  function setErfolgMsg( msg ) {
    if (document.getElementById){
      target = document.getElementById("sendformresult");
      target.className = "sendform_erfolg";
      target.innerHTML = msg;
      anzeigen("sendformresult");
    }
  }

  function sendform(formname) {

    //Ergebnisfenster ausblenden
    verbergen("sendformresult");

    //Formular ermitteln
    var form_object = document.getElementById(formname);

    //Formularname übergeben
    var params = "formname=" + formname;

    //Formularfelder auslesen
    for (i = 0; i < form_object.elements.length; i++) {
      if (params != "") params = params + "&";
      params = params + form_object.elements[i].name + "=" + urlencode(form_object.elements[i].value);
    }

    //Aufruf durchführen
    var myAjax = new Ajax.Request("inc/sendform.inc.php",
    				   {
                                      method: 'post',
    	 			     parameters:  params,
            			     onSuccess:   show_result,
              			     onFailure:   show_failure,
                			     onException: show_exception
                                    }
                     	        );

  }

  function show_result( requestObject ) {
    if (requestObject.responseText == "OK") {
      setErfolgMsg("Ihre Anfrage wurde erfolgreich ermittelt, wir melden uns zum nächst möglichen Zeitpunkt.");
    } else {
      setErrorMsg(requestObject.responseText);
    }
  }

  function show_failure( requestObject ) {
    setErrorMsg("Aufgrund eines Serverfehlers konnten Ihre Daten nicht verarbeitet werden, der Server meldet :<br> " + requestObject.statusText + " - bitte informieren Sie den Administrator wenn der Fehler wiederholt auftritt.");
  }

  function show_exception( requestObject, ex) {
    setErrorMsg("Aufgrund eines Serverfehlers konnten Ihre Daten nicht verarbeitet werden - bitte informieren Sie den Administrator wenn der Fehler wiederholt auftritt.");
  }