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_reloadPage(init) {  //reloads the window if Nav4 resized
  if (init==true) with (navigator) {if ((appName=="Netscape")&&(parseInt(appVersion)==4)) {
    document.MM_pgW=innerWidth; document.MM_pgH=innerHeight; onresize=MM_reloadPage; }}
  else if (innerWidth!=document.MM_pgW || innerHeight!=document.MM_pgH) location.reload();
}
MM_reloadPage(true);

function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

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_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 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_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}


function MM_openBrWindow(theURL,winName,features) { //v2.0
  window.open(theURL,winName,features);
}

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_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 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_showHideLayers() { //v6.0
  var i,p,v,obj,args=MM_showHideLayers.arguments;
  for (i=0; i<(args.length-2); i+=3) if ((obj=MM_findObj(args[i]))!=null) { v=args[i+2];
    if (obj.style) { obj=obj.style; v=(v=='show')?'visible':(v=='hide')?'hidden':v; }
    obj.visibility=v; }
}


function checkForm() {

if ((document.kurs.Kurswahl[0].checked==false) && (document.kurs.Kurswahl[1].checked==false) && (document.kurs.Kurswahl[2].checked==false)){
alert("Bitte wählen Sie einen Kurs aus!")
document.kurs.Kurswahl.focus();
return false;
}



if (document.kurs.Anrede.checked==""){
alert("Bitte vergessen Sie Ihre Anrede nicht!")
document.kurs.Anrede.focus();
return false;
}

if ((document.kurs.Name.value=="") || (document.kurs.Name.value== null)){
alert("Bitte geben Sie Ihren Namen an!")
document.kurs.Name.focus();
return false;
}

if (document.kurs.Vorname.value==""){
alert("Bitte geben Sie Ihren Voramen an!")
document.kurs.Vorname.focus();
return false;
}

if (document.kurs.Strasse.value=="" ){
alert("Bitte geben Sie Ihre Adresse an!")
document.kurs.Strasse.focus();
return false;
}

if (document.kurs.Ort.value==""){
alert("Bitte geben Sie PLZ und Ort an!")
document.kurs.Ort.focus();
return false;
}

if (document.kurs.Telefon.value=="" & document.kurs.Mobile.value==""){
alert("Bitte geben Sie Ihre Telefonnummer oder Ihre Mobilenummer an!")
document.kurs.Telefon.focus();
return false;
}

if (!validateAddress(document.kurs.E_Mail.value)) {
alert("Bitte geben Sie eine gültige e-Mail-Adresse an!")
document.kurs.E_Mail.focus();
return false;
}


function validateAddress(email) {    
      //gme 07-Feb-2002 reg exp pattern taken from site http://regxlib.com and simplified for our needs. complies to RFC 821
      //nb: the above site has a wealth of regular pattern for different 'usage patterns, e.g email validation, zip code validation, etc.
      //This regular expression matches email addresses that match  the format specified by RFC 821 
      if ((email == null) || (email == ""))
     		return false;
      else {
	 		//create regular expression object
       		var regEx = new RegExp("^[a-zA-Z0-9]([a-zA-Z0-9_\-]*)(\.[a-zA-Z0-9_\-]+)*@(([a-zA-Z0-9\-]+\.)+)([a-zA-Z]{2,4}|[0-9]{1,3})$", "i");
          
       		//execute the search test and return the result      
	return regEx.test(email);
}
}        

if ((document.kurs.Sicherheit.value)!= "Kurs:" +document.kurs.Name.value){
alert("Bitte geben Sie zur Sicherheit das Wort   Kurs:   und Ihren Namen ein!")
document.kurs.Sicherheit.focus();
return false;
}

}