function dropDown(id)
{
  var head = document.getElementById(id+"_caption");
  var itemSet = document.getElementById(id+"_itemSet");

    
    itemSet.style.display = "block";
    //Nicht auskommentieren...
    head.style.backgroundColor="#D3002D";
    head.style.color="#FFFFFF";
  
  
}

function closeDropDown(id)
{
  var itemSet = document.getElementById(id+"_itemSet");
  var head = document.getElementById(id+"_caption");
  
  itemSet.style.display="none"; 
  head.style.backgroundColor="";
  head.style.color="";
}