function useajax(daten, url, lieferdiv, daten2, daten3, daten4, daten5, daten6, daten7, daten8, daten9, daten10, daten11, daten12, daten13, daten14, daten15, daten16, daten17){
    
		var xmlHttp = null;
		// Mozilla, Opera, Safari sowie Internet Explorer 7
		if (typeof XMLHttpRequest != 'undefined') {
			xmlHttp = new XMLHttpRequest();
		}

		if (!xmlHttp) {
			// Internet Explorer 6 und älter
			try {
				xmlHttp  = new ActiveXObject("Msxml2.XMLHTTP");
			} catch(e) {
				try {
					xmlHttp  = new ActiveXObject("Microsoft.XMLHTTP");
				} catch(e) {
					xmlHttp  = null;
				}
			}
		}
		// Wenn das Objekt erfolgreich erzeugt wurde			
		if (xmlHttp) {
			//var url = "menu.ajax.php";
			var params = "datenuebermittlung="+daten;
			params += "&ld="+lieferdiv;
			params += "&dat2="+daten2;
			params += "&dat3="+daten3;
			params += "&dat4="+daten4;
			params += "&dat5="+daten5;
			params += "&dat6="+daten6;
			params += "&dat7="+daten7;
			params += "&dat8="+daten8;
			params += "&dat9="+daten9;
			params += "&dat10="+daten10;
			params += "&dat11="+daten11;
			params += "&dat12="+daten12;
			params += "&dat13="+daten13;
			params += "&dat14="+daten14;
			params += "&dat15="+daten15;
			params += "&dat16="+daten16;
			params += "&dat17="+daten17;


			xmlHttp.open("POST", url, true);
			
			//Headerinformationen für den POST Request				
			xmlHttp.setRequestHeader("Content-type", "application/x-www-form-urlencoded");
			xmlHttp.setRequestHeader("Content-length", params.length);
			xmlHttp.setRequestHeader("Connection", "close");					
			  
			xmlHttp.onreadystatechange = function () {
				if (xmlHttp.readyState == 4) {
					// Zurückgeliefertes Ergebnis wird in den DIV "ergebnis" geschrieben
					document.getElementById(lieferdiv).innerHTML = xmlHttp.responseText;
			
					var slicedLieferDiv = lieferdiv.slice(10);
					slicedLieferDiv = slicedLieferDiv.toLowerCase();

					if (xmlHttp.responseText != "") {
            document.getElementById(lieferdiv).style.display = '';
            fieldFailed(slicedLieferDiv);
          } else if (xmlHttp.responseText == "" && daten2 == "") {
            // nichts tun
          } else {
            if (document.getElementById(lieferdiv).style.display == '')
              document.getElementById(lieferdiv).style.display = 'none';
            fieldProofed(slicedLieferDiv);
          }

				}

			};
			xmlHttp.send(params);
		}


	}

  function closeDiv(div) {

		if (document.getElementById(div).style.display == "")
		  document.getElementById(div).style.display = "none";
    
  }

  function showDiv(div) {

		if (document.getElementById(div).style.display == "none")
		  document.getElementById(div).style.display = "";
    
  }

  function showHide(div) {

		if (document.getElementById(div).style.display == "none")
		  document.getElementById(div).style.display = "";
		else
		  document.getElementById(div).style.display = "none";
    
  }

  function formFocus(div) {

    document.getElementById(div).style.backgroundColor = '#4664d8'; 
    document.getElementById(div).style.color = '#ffffff';
    
  }
  
  function formBlur(div) {
  
    document.getElementById(div).style.backgroundColor = '#ffffff'; 
    document.getElementById(div).style.color = '#000000';
    
  }