// JavaScript Document

         function zmen1(id) {
  var id1 = id;
  
  document.getElementById(id1).style.backgroundPosition="0% 0%" ;
  }
  
    function zmen2(id) {
     var id1 = id;
   document.getElementById(id1).style.backgroundPosition="0% 100%" ;
  }
  
   function zmenFont1(id) {
  var id1 = id;
  
  document.getElementById(id1).style.color="#FF3700" ;
  document.getElementById(id1).style.textDecoration="underline" ;
  }
  
   function zmenFont2(id) {
  var id1 = id;
  
  document.getElementById(id1).style.color="black" ;
  document.getElementById(id1).style.textDecoration="none" ;
  }
 //--------------------------------------------------------------------

  function linkDark(idA,idB,nazev) {
  var id1 = idA;
  var id2 = idB;
  var nazev = nazev;
  
  document.getElementById(id2).style.color="#FF3700" ;
  document.getElementById(id1).style.textDecoration="underline" ;
  document.images[id1].src=nazev;
  
 
 }//end function 
 
 
 
 function linkLight(idA,idB,nazev) {
 var id1 = idA;
  var id2 = idB;
  var nazev = nazev;
  
  document.getElementById(id2).style.color="black" ;
  document.getElementById(id1).style.textDecoration="underline" ;
  document.images[id1].src=nazev;
 
 }//end function