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];}
}
//formularcheck

var content;     //hilfsvariable, deren wert im laufe des checks veraedert wird
var chars = "1234567890-abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZäöüßÄÖÜ -,.!<>" //buchst.+zeichen die vorkommen können


    function formCheck(){

         content = document.mail.nachname.value; //betreff feld wird abgefragt

         if((!checkContent(content,chars))||(content == "")) {
         alert("Bitte geben Sie Ihren Namen an.");
         document.mail.nachname.focus();
         return;
         }

         if(!checkMail()){
         alert("Bitte geben Sie Ihre E-Mail Adresse an");
         document.mail.absenderemail.focus();
         return;
         }

		 
          document.mail.submit();
}

       function checkContent(toCheck,criteria){

        for(i=0;i<toCheck.length;i++){
                letter = toCheck.charAt(i);
                if(criteria.indexOf(letter) == -1){
                        return false;
                }
        }
        return true;
}

function checkMail() {
         var atPos;
         var anotherAtPos;
         var pointPos;

         content = document.mail.absenderemail.value;
         atPos = content.indexOf('@');
         anotherAtPos = content.indexOf('@',atPos+1)

         if((atPos != -1)&&(anotherAtPos == -1)) {
                   pointPos = content.lastIndexOf('.');
                   if(pointPos > atPos) {
                   return true;

} else {
                   return false;
       }
       }else{
             return false;

       }
}