function pwfield() {
  document.getElementById('pw_fake').style.display='none';
  document.getElementById('pw').style.display='inline';
  document.getElementById('pw').focus();
}
function userfield(){
  document.getElementById('username').value='';
}
function textareafill(was){
  switch (was)
  {
    case 1: { insert("[LEFT]","[/LEFT]"); break }
    case 2: { insert("[CENTER]","[/CENTER]"); break }
    case 3: { insert("[RIGHT]","[/RIGHT]"); break }
    case 4: { insert("[B]","[/B]"); break }
    case 5: { insert("[I]","[/I]"); break }
    case 6: { insert("[U]","[/U]"); break }
    case 7: { insert("[H]","[/H]"); break }
    case 8: { insert("[JUSTIFY]","[/JUSTIFY]"); break }
    case 9: { insert("[URL=","]LinkName[/URL]"); break }
    case 10: { insert("[IMG=","]ALTTEXT[/IMG]"); break }
    case 11: { insert("[PDF]","[/PDF]"); break }
  }
}

function insert(aTag, eTag) {
  var input = document.getElementById('user_eingabe');
  input.focus();
  /* für Internet Explorer */
  if(typeof document.selection != 'undefined') {
    /* Einfügen des Formatierungscodes */
    var range = document.selection.createRange();
    var insText = range.text;
    range.text = aTag + insText + eTag;
    /* Anpassen der Cursorposition */
    range = document.selection.createRange();
    if (insText.length == 0) {
      range.move('character', -eTag.length);
    } else {
      range.moveStart('character', aTag.length + insText.length + eTag.length);      
    }
    range.select();
  }
  /* für neuere auf Gecko basierende Browser */
  else if(typeof input.selectionStart != 'undefined')
  {
    /* Einfügen des Formatierungscodes */
    var start = input.selectionStart;
    var end = input.selectionEnd;
    var insText = input.value.substring(start, end);
    input.value = input.value.substr(0, start) + aTag + insText + eTag + input.value.substr(end);
    /* Anpassen der Cursorposition */
    var pos;
    if (insText.length == 0) {
      pos = start + aTag.length;
    } else {
      pos = start + aTag.length + insText.length + eTag.length;
    }
    input.selectionStart = pos;
    input.selectionEnd = pos;
  }
  /* für die übrigen Browser */
  else
  {
    /* Abfrage der Einfügeposition */
    var pos;
    var re = new RegExp('^[0-9]{0,3}$');
    while(!re.test(pos)) {
      pos = prompt("Einfügen an Position (0.." + input.value.length + "):", "0");
    }
    if(pos > input.value.length) {
      pos = input.value.length;
    }
    /* Einfügen des Formatierungscodes */
    var insText = prompt("Bitte geben Sie den zu formatierenden Text ein:");
    input.value = input.value.substr(0, pos) + aTag + insText + eTag + input.value.substr(pos);
  }
}