function checkEntries()
        {
                var strFields = ""

                if (document.getElementById("vorname").value == "") strFields += "Vorname, ";

                if (document.getElementById("nachname").value == "") strFields += "Nachname, ";

                if (document.getElementById("organisation").value == "") strFields += "Organisation, ";

                if (document.getElementById("email").value == "") strFields += "eMail, ";

                if (document.getElementById("strasse").value == "") strFields += "Strasse, ";

                if (document.getElementById("plz").value == "") strFields += "PLZ, ";

                if (document.getElementById("ort").value == "") strFields += "Ort, ";

                if (document.getElementById("anmerkung").value == "") strFields += "Nachricht, ";

                if (strFields.length > 2)

                {

                        strFields = strFields.slice(0, strFields.length - 2);

                        alert("Bitte füllen Sie alle erforderlichen Felder aus (" + strFields + ")!");

                }

		else

		{

                        var strEMail = document.getElementById("email").value;


			if (strEMail.indexOf("@")!=-1 && strEMail.indexOf(".", strEMail.indexOf("@"))!=-1)

                        {

				document.form1.submit();

			}

                        else

                        {

                                alert("Bitte geben Sie eine gültige Email Adresse an!")

                        }

		}

}




<!--
function MM_swapImgRestore() { //v3.0
  var i,x,a=document.MM_sr; for(i=0;a&&i<a.length&&(x=a[i])&&x.oSrc;i++) x.src=x.oSrc;
}

function MM_preloadImages() { //v3.0
  var d=document; if(d.images){ if(!d.MM_p) d.MM_p=new Array();
    var i,j=d.MM_p.length,a=MM_preloadImages.arguments; for(i=0; i<a.length; i++)
    if (a[i].indexOf("#")!=0){ d.MM_p[j]=new Image; d.MM_p[j++].src=a[i];}}
}

function MM_findObj(n, d) { //v4.01
  var p,i,x;  if(!d) d=document; if((p=n.indexOf("?"))>0&&parent.frames.length) {
    d=parent.frames[n.substring(p+1)].document; n=n.substring(0,p);}
  if(!(x=d[n])&&d.all) x=d.all[n]; for (i=0;!x&&i<d.forms.length;i++) x=d.forms[i][n];
  for(i=0;!x&&d.layers&&i<d.layers.length;i++) x=MM_findObj(n,d.layers[i].document);
  if(!x && d.getElementById) x=d.getElementById(n); return x;
}

function MM_swapImage() { //v3.0
  var i,j=0,x,a=MM_swapImage.arguments; document.MM_sr=new Array; for(i=0;i<(a.length-2);i+=3)
   if ((x=MM_findObj(a[i]))!=null){document.MM_sr[j++]=x; if(!x.oSrc) x.oSrc=x.src; x.src=a[i+2];}
}
//-->