function sellingline() {
          setInterval ('sellingrotate()', 2500);
        }
      
        function sellingrotate() {
          document.getElementById('selling').innerHTML = ' ';
          setTimeout( "document.getElementById('selling').innerHTML = poleTextov[lineCounter]",500);
          lineCounter++;
          if (lineCounter == poleTextov.length)
            lineCounter = 0;
        }