function fasteck(ele1,ele2,ele3,ele4)
{
  if (document.getElementById)
  {
     document.getElementById("schwimmer1").style.display = "";
     document.getElementById("schwimmer2").style.display = "";
     document.getElementById("schwimmer3").style.display = "";
     document.getElementById("schwimmer4").style.display = "";
     document.getElementById("radler1").style.display = "";
     document.getElementById("radler2").style.display = "";
     document.getElementById("radler3").style.display = "";
     document.getElementById("radler4").style.display = "";
     document.getElementById("laeufer1").style.display = "";
     document.getElementById("laeufer2").style.display = "";
     document.getElementById("laeufer3").style.display = "";
     document.getElementById("laeufer4").style.display = "";
     document.getElementById(ele1).style.display = "none";
     document.getElementById(ele2).style.display = "none";
     document.getElementById(ele3).style.display = "none";
     document.getElementById(ele4).style.display = "none";
  }
}