function format(v,form,field)
 {
 if (document.selection) // für IE
   {
    var str = document.selection.createRange().text;
    document.forms[form].elements[field].focus();
    var sel = document.selection.createRange();
    sel.text = "[" + v + "]" + str + "[/" + v + "]";
    return;
   }
  else if ((typeof document.forms[form].elements[field].selectionStart) != 'undefined') // für Mozilla
   {
    var txtarea = document.forms[form].elements[field];
    var selLength = txtarea.textLength;
    var selStart = txtarea.selectionStart;
    var selEnd = txtarea.selectionEnd;
    var oldScrollTop = txtarea.scrollTop;
    var s1 = (txtarea.value).substring(0,selStart);
    var s2 = (txtarea.value).substring(selStart, selEnd)
    var s3 = (txtarea.value).substring(selEnd, selLength);
    txtarea.value = s1 + '[' + v + ']' + s2 + '[/' + v + ']' + s3;
    txtarea.selectionStart = s1.length;
    txtarea.selectionEnd = s1.length + 5 + s2.length + v.length * 2;
    txtarea.scrollTop = oldScrollTop;
    txtarea.focus();
    return;
   }
  else insert('<' + v + '></' + v + '> ');
 }

function insert_link(form,field)
 {
 var mark_word_first = "Bitte erst das zu verlinkende Wort markieren!";
 var link_target = "Link-Ziel: http://www.xyz.de";

 if (document.selection) // für IE
   {
    var str = document.selection.createRange().text;
    document.forms[form].elements[field].focus();
    var sel = document.selection.createRange();
    if(sel.text=='') alert(mark_word_first);
    else
     {
      var insert_link = prompt(link_target);
      if(insert_link)
       {
        sel.text = "[link=" + insert_link + "]" + str + "[/link]";
        return;
       }
     }
   }
  else if ((typeof document.forms[form].elements[field].selectionStart) != 'undefined') // für Mozilla
   {
    var txtarea = document.forms[form].elements[field];
    var selLength = txtarea.textLength;
    var selStart = txtarea.selectionStart;
    var selEnd = txtarea.selectionEnd;
    var oldScrollTop = txtarea.scrollTop;
    var s1 = (txtarea.value).substring(0,selStart);
    var s2 = (txtarea.value).substring(selStart, selEnd);
    var s3 = (txtarea.value).substring(selEnd, selLength);
    if(selEnd-selStart==0) alert(mark_word_first);
    else
     {
      var insert_link = prompt(link_target);
      if(insert_link)
       {
        txtarea.value = s1 + '[link=' + insert_link + ']' + s2 + '[/link]' + s3;
        txtarea.selectionStart = s1.length;
        txtarea.selectionEnd = s1.length + 5 + s2.length + v.length * 2;
        txtarea.scrollTop = oldScrollTop;
        txtarea.focus();
        return;
       }
     }
   }
  else insert('[link=http://...]Link[/link]',form.field);
 }

 function insert_mail(form,field)
 {
 var mark_word_first = "Bitte erst das zu verlinkende Wort markieren!";
 var mail_target = "Mail-Ziel:";

 if (document.selection) // für IE
   {
    var str = document.selection.createRange().text;
    document.forms[form].elements[field].focus();
    var sel = document.selection.createRange();
    if(sel.text=='') alert(mark_word_first);
    else
     {
      var insert_mail = prompt(mail_target);
      if(insert_mail)
       {
        sel.text = "[mail=" + insert_mail + "]" + str + "[/mail]";
        return;
       }
     }
   }
  else if ((typeof document.forms[form].elements[field].selectionStart) != 'undefined') // für Mozilla
   {
    var txtarea = document.forms[form].elements[field];
    var selLength = txtarea.textLength;
    var selStart = txtarea.selectionStart;
    var selEnd = txtarea.selectionEnd;
    var oldScrollTop = txtarea.scrollTop;
    var s1 = (txtarea.value).substring(0,selStart);
    var s2 = (txtarea.value).substring(selStart, selEnd);
    var s3 = (txtarea.value).substring(selEnd, selLength);
    if(selEnd-selStart==0) alert(mark_word_first);
    else
     {
      var insert_mail = prompt(mail_target);
      if(insert_mail)
       {
        txtarea.value = s1 + '[mail=' + insert_mail + ']' + s2 + '[/mail]' + s3;
        txtarea.selectionStart = s1.length;
        txtarea.selectionEnd = s1.length + 5 + s2.length + v.length * 2;
        txtarea.scrollTop = oldScrollTop;
        txtarea.focus();
        return;
       }
     }
   }
  else insert('[mail=mailto:...]Link[/mail]',form.field);
 }

function insert(form,field,what)
 {
  if (document.forms[form].elements[field].createTextRange)
   {
    document.forms[form].elements[field].focus();
    document.selection.createRange().duplicate().text = what;
   }
  else if ((typeof document.forms[form].elements[field].selectionStart) != 'undefined') // für Mozilla
   {
    var tarea = document.forms[form].elements[field];
    var selEnd = tarea.selectionEnd;
    var txtLen = tarea.value.length;
    var txtbefore = tarea.value.substring(0,selEnd);
    var txtafter =  tarea.value.substring(selEnd, txtLen);
    var oldScrollTop = tarea.scrollTop;
    tarea.value = txtbefore + what + txtafter;
    tarea.selectionStart = txtbefore.length + what.length;
    tarea.selectionEnd = txtbefore.length + what.length;
    tarea.scrollTop = oldScrollTop;
    tarea.focus();
   }
  else
   {
    document.forms[form].elements[field].value += what;
    document.forms[form].elements[field].focus();
   }
 }

function check()
 {
if (document.form.name.value=="")                        //Ansprechpartner :
{ alert ("Bitte Deinen Namen eingeben");                //Meldung wenn Fehler
  document.form.name.focus();                                //Sprung zum Feld
  return false }

if (document.form.text.value=="")                        //Ansprechpartner :
{ alert ("Wäre schön wenn Du einen Gruß hinterlassen würdest");                //Meldung wenn Fehler
  document.form.text.focus();                                //Sprung zum Feld
  return false }
}

function toForm() {
document.form.name.focus();
}