//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Funktionen fuer das Projekt
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++



//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
// Schrifgroesse aendern
//++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++

var defaultGroesse = 1;
var aktuelleGroesse = defaultGroesse;
var groesseSchritt = 0.25;

function schriftgroesse(wert)
{

  if (wert == 'plus')
  {
    aktuelleGroesse += groesseSchritt;
    groesseAendern(aktuelleGroesse);
  }
  else
  {
    if (wert == 'minus')
    {
      aktuelleGroesse -= groesseSchritt;
      groesseAendern(aktuelleGroesse);
    }
    else
    {
      aktuelleGroesse = defaultGroesse;
      groesseAendern(aktuelleGroesse);
    }
  }

}

function groesseAendern(wert)
{
  var size = String(wert + 'em');
  var kopf = document.getElementById('kopf');
  var rumpf = document.getElementById('rumpf');
  var fuss = document.getElementById('fuss');

  kopf.style.fontSize = size;
  rumpf.style.fontSize = size;
  fuss.style.fontSize = size;
}