// gemeinsam genutzte JavaScript-Funktionen
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_nbGroup(event, grpName) { //v6.0
  var i,img,nbArr,args=MM_nbGroup.arguments;
  if (event == "init" && args.length > 2) {
    if ((img = MM_findObj(args[2])) != null && !img.MM_init) {
      img.MM_init = true; img.MM_up = args[3]; img.MM_dn = img.src;
      if ((nbArr = document[grpName]) == null) nbArr = document[grpName] = new Array();
      nbArr[nbArr.length] = img;
      for (i=4; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
        if (!img.MM_up) img.MM_up = img.src;
        img.src = img.MM_dn = args[i+1];
        nbArr[nbArr.length] = img;
    } }
  } else if (event == "over") {
    document.MM_nbOver = nbArr = new Array();
    for (i=1; i < args.length-1; i+=3) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = (img.MM_dn && args[i+2]) ? args[i+2] : ((args[i+1])? args[i+1] : img.MM_up);
      nbArr[nbArr.length] = img;
    }
  } else if (event == "out" ) {
    for (i=0; i < document.MM_nbOver.length; i++) {
      img = document.MM_nbOver[i]; img.src = (img.MM_dn) ? img.MM_dn : img.MM_up; }
  } else if (event == "down") {
    nbArr = document[grpName];
    if (nbArr)
      for (i=0; i < nbArr.length; i++) { img=nbArr[i]; img.src = img.MM_up; img.MM_dn = 0; }
    document[grpName] = nbArr = new Array();
    for (i=2; i < args.length-1; i+=2) if ((img = MM_findObj(args[i])) != null) {
      if (!img.MM_up) img.MM_up = img.src;
      img.src = img.MM_dn = (args[i+1])? args[i+1] : img.MM_up;
      nbArr[nbArr.length] = img;
  } }
}

function writeFooter () {
document.write ('Sch&ouml;berl <img src="images/raute_kl.gif" width="7" height="7" alt="raute"> Zenz Wirtschaftspr&uuml;fer Steuerberater<br>Nymphenburger Stra&szlig;e 164/IV &bull; 80634 M&uuml;nchen &bull; Tel.: (089) 130743-0, Fax -43 &bull; <a href="kontakt.htm">Email</a>');
}

function isEmail(fm, fld)
 {
  s = document[fm][fld].value;
  ret = (s.search(/^\w+((-\w+)|(\.\w+))*\@[A-Za-z0-9]+((\.|-)[A-Za-z0-9]+)*\.[A-Za-z0-9]+$/) != -1);
  if (ret && (s == "EMail@yourdomain.de"))
   {
    ret = false;
   }
  return(ret);
 }


function isRequired(fm, fld)
 {
  return((document[fm][fld].value.length > 0) && (document[fm][fld].value != "Name"));
 }


function isSomethingChecked(fm, fld)
 {
  var nChecked=0;

  for (i=0; i < document[fm][fld].length; ++i)
   {
    if (document[fm][fld][i].checked)
     {
      return(true);
     }
   }
  return(false);
 }


function ValidateMsg(stat, idMsg, msg)
 {
  if (!document.getElementById(idMsg))
   {
    alert("Scriptfehler: Element " + idMsg + " nicht gefunden!");
   }
  var elem = document.getElementById(idMsg);
  if (!stat)
   {
    elem.firstChild.nodeValue = msg;
    return(1);
   }
  else
   {
    elem.firstChild.nodeValue = "";
    return(0);
   }
 }


function ValidateForm()
 {
  var err = 0;

  err += ValidateMsg(isRequired("MyForm", "name"), "msgName", "Bitte geben Sie einen Namen ein");
  err += ValidateMsg(isEmail("MyForm", "email"), "msgEmail", "Bitte geben Sie eine korrekte EMail-Adresse ein");
  err += ValidateMsg(isSomethingChecked("MyForm", "select"), "msgSelection", "Bitte wählen Sie mindestens ein Dokument");
  if (err)
   {
    document.getElementById('ergebnis').value = (err+" Eingabefehler");
   }
  else
   {
    document.getElementById('ergebnis').value = ("Eingabe wird verarbeitet");
   }
 }