function rolujplus(idecko){       

       document.getElementById(idecko).style.height = '100%';
       document.getElementById(idecko).style.display = 'block';
       document.getElementById(idecko + '-minus').style.display = 'block';
       document.getElementById(idecko + '-plus').style.display = 'none';
        }
        
function rolujminus(idecko){       
       
       document.getElementById(idecko).style.height = '0px';
       document.getElementById(idecko).style.display = 'none';
       document.getElementById(idecko + '-plus').style.display = 'block';
       document.getElementById(idecko + '-minus').style.display = 'none';    
    }