// JavaScript Document
function testOSC()
 {
 if(document.getElementById("OS").value == 3)
    {
     document.getElementById("SUB").style.visibility='visible';
    }
 else {
        document.getElementById("SUB").style.visibility='hidden';
      }   
 if (document.getElementById("OS").value == 5) 
    {
     document.getElementById("SUB1").style.visibility= 'visible';
    }
 else {
        document.getElementById("SUB1").style.visibility='hidden';
      }
  if (document.getElementById("OS").value == 4) 
    {
     document.getElementById("SUB2").style.visibility= 'visible';
    }
 else {
        document.getElementById("SUB2").style.visibility='hidden';
        document.getElementById("SUB2").checked = false;
      } 
      
   if (document.getElementById("OS").value == 7) 
    {
     document.getElementById("SUB3").style.visibility= 'visible';
    }
 else {
        document.getElementById("SUB3").style.visibility='hidden';
        
      } 
        
     if (document.getElementById("OS").value == 9) 
    {
     document.getElementById("SUB4").checked= true;
    }
                 
}    

function VisHid(idecko){
        el=document.getElementById(idecko).style;
        el.display=(el.display == 'block')?'none':'block';
        }

function showCell() {
document.getElementById('cellName').style.visibility='visible';
}

function chImg(nazev,novy) 
                      { 
              document.images[nazev].src=novy; 
                      }