function Bildwechsel(ID, Bild, Groesse)
  {
    if (Groesse == 'gross')
    {
      document.getElementById(ID).width=document.getElementById(ID).width*1.0;
      document.getElementById(ID).height=document.getElementById(ID).height*1.0;
    }
    else
    {
      document.getElementById(ID).width=document.getElementById(ID).width/1.0;
      document.getElementById(ID).height=document.getElementById(ID).height/1.0;
    }
    document.getElementById(ID).src = Bild.src;
  }

  function FensterOeffnen (Adresse)
  {
    Fenster1 = window.open(Adresse, "Music4Fun", "width=300,height=400,left=100,top=100,dependent=yes,scrollbars=yes,hotkeys=no");
    Fenster1.focus();
  }
  
  function FensterSchliessen()
  {
    window.close();
  }
  
  function changeBG(ID,Picture)
  {
    var url="url(" + Picture + ")";
	document.getElementById(ID).style.backgroundImage = url;
  }

  function submenue(activate,ID,Picture,subID)
  {
    var url = "url(" + Picture + ")\n";
	document.getElementById(ID).style.backgroundImage = url;
	document.getElementById(subID).style.visibility = activate;
  }