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];}
}

function changeCode(){
	MM_swapImage('c_image','','/captcha/server.php?'+Math.random(),1);
}
/*
function validate(emailad) {

	var exclude=/[^@\-\.\w]|^[_@\.\-]|[\._\-]{2}|[@\.]{2}|(@)[^@]*\1/;
	var check=/@[\w\-]+\./;
	var checkend=/\.[a-zA-Z]{2,3}$/;

   if(((emailad.search(exclude) != -1)||(emailad.search(check)) == -1)||(emailad.search(checkend) == -1)){
      return false;
   }
   else {
      return true;
   }
}

function checkForm() {
	var empty_field = 0;
	
	if(document.form1.eMail.value != '' && validate(document.form1.eMail.value) == false) {
		document.form1.eMail.style.background = '#FF0000';
		alert('Die E-Mail Adresse ist ungültig');
		var abbruch = 1;
		return false;	
	}
	
	if(document.form1.eMail.value == ''){
		document.form1.eMail.style.background = '#FF0000';
		empty_field = 1;
	}		
	
	if(document.form1.Name.value == ''){
		document.form1.Name.style.background = '#FF0000';
		empty_field = 1;
	}	
	
	if(document.form1.Mitteilung.value == ''){
		document.form1.Mitteilung.style.background = '#FF0000';
		empty_field = 1;
	}
	
	if(empty_field == 1) {
		alert('Füllen Sie mindestens die rot markierten Felder aus');
		return false;
	} else if(abbruch != 1){
		form1.submit();
	}
}
*/