function prikazi(btn_n , tr_id , div_id )
{
  var trx = document.getElementById( tr_id );
  var btn = document.getElementById( btn_n );
  var divx = document.getElementById( div_id );
  
  if (trx.style.visibility == "visible")
    {
  	  trx.style.visibility = "collapse";
  	  divx.style.visibility = "hidden";
  	  divx.style.height = "0px";
  	  btn.value = "Otvori";
    }
  else
    {
  	  trx.style.visibility = "visible";
      divx.style.visibility = "visible";  	  
      divx.style.height = "375px";
  	  btn.value = "Skloni";
    }
  
}


// call to external Javascript/PHP file and pass Parent ID
function prikazi_dan_new( dan_id ) 
{
	
	// create new script element and set its relative URL (including ID argument)
	script = document.createElement( 'script' );
	script.src = 'p_dan.php?dan_id=' + dan_id;
	
	// attach (load) script element to document head
	document.getElementsByTagName( 'head' )[0].appendChild( script );
}