function setCookie(Wert)
    {
      var Bezeichner = "TextSize"
      jetzt=new Date();
      Auszeit=new Date(jetzt.getTime()+365*86400000);
      document.cookie=Bezeichner+"="+Wert+";expires="+Auszeit.toGMTString()+";";
    }

function readCookie()
   {
      Wert = "";
      if(document.cookie)
      {
        Wert = document.cookie;
        Wert = Wert.slice(Wert.indexOf("TextSize=")+9,Wert.indexOf("TextSize=")+12);
        return Wert;
      }
      else{
        return null;
      }
   }

function smallSize()
{
  var fontBodyVariable = document.getElementsByTagName('body')[0];
  fontBodyVariable.style.fontSize = "75%";
  document.getElementById('a-small').style.backgroundImage = "url(fileadmin/layout/gfx/arrow.jpg)";
  document.getElementById('a-medium').style.backgroundImage = "url()";
  document.getElementById('a-large').style.backgroundImage = "url()";
  setCookie('75%');
}

function mediumSize()
{
  var fontBodyVariable = document.getElementsByTagName('body')[0];
  fontBodyVariable.style.fontSize = "80%";
  document.getElementById('a-small').style.backgroundImage = "url()";
  document.getElementById('a-medium').style.backgroundImage = "url(fileadmin/layout/gfx/arrow.jpg)";
  document.getElementById('a-large').style.backgroundImage = "url()";
  setCookie('80%');
}

function largeSize()
{
  var fontBodyVariable = document.getElementsByTagName('body')[0];
  fontBodyVariable.style.fontSize = "85%";
  document.getElementById('a-small').style.backgroundImage = "url()";
  document.getElementById('a-medium').style.backgroundImage = "url()";
  document.getElementById('a-large').style.backgroundImage = "url(fileadmin/layout/gfx/arrow.jpg)";
  setCookie('85%');
}

function setSize()
{
  var fontBodyVariable = document.getElementsByTagName('body')[0];

  if(readCookie() != null)
  {
    var size = readCookie();
    fontBodyVariable.style.fontSize = size;
    
    if(size == "75%")
    {
      document.getElementById('a-small').style.backgroundImage = "url(fileadmin/layout/gfx/arrow.jpg)";
      document.getElementById('a-medium').style.backgroundImage = "url()";
      document.getElementById('a-large').style.backgroundImage = "url()";
    }
    else if(size == "80%")
    {
      document.getElementById('a-small').style.backgroundImage = "url()";
      document.getElementById('a-medium').style.backgroundImage = "url(fileadmin/layout/gfx/arrow.jpg)";
      document.getElementById('a-large').style.backgroundImage = "url()";
    }
    else if(size == "85%")
    {
      document.getElementById('a-small').style.backgroundImage = "url()";
      document.getElementById('a-medium').style.backgroundImage = "url()";
      document.getElementById('a-large').style.backgroundImage = "url(fileadmin/layout/gfx/arrow.jpg)";
    }
  }
}