function na_gore ( )
   {
      $body = (window.opera) ? (document.compatMode == "CSS1Compat" ? $('html') : $('body')) : $('html,body');

      $body
         .stop()
         .animate({
            "scrollTop": "0"
         }, 1000, 'easeInOutSine');
               
   }
   
   function kontakt ()
   {
      $body = (window.opera) ? (document.compatMode == "CSS1Compat" ? $('html') : $('body')) : $('html,body');

      $body
         .stop()
         .animate({
            "scrollTop": "516"
         }, 1000, 'easeInOutSine');
   }