function aktualne(idecko){
  el=document.getElementById(idecko).style;
  el2=document.getElementById("akt-nadpis").style;
  	
  if(el.display == 'none'){
      el.display='block';
      el2.backgroundImage = 'url(http://karel/lvidvur.cz/img/sipka-up.png)';
    } else {
      el.display='none';
      el2.backgroundImage = 'url(http://karel/lvidvur.cz/img/sipka-down.png)';    
  }  	
}
$(function() {
	$('#popup')
	.cycle({
	    fx:     'fade',
	    speed:  1000,
	    timeout: 5000
	});
});