var tm;
         var i;
         var eco_off_src = 'uvodni/images/eco.gif'
         var eco_on_src = 'uvodni/images/eco-over.gif'
         var quality_off_src = 'uvodni/images/qua.gif'
         var quality_on_src = 'uvodni/images/qua-over.gif'
         var sec_off_src = 'uvodni/images/sec.gif'
         var sec_on_src = 'uvodni/images/sec-over.gif'
         var tour_off_src = 'uvodni/images/tour.gif'
         var tour_on_src = 'uvodni/images/tour-over.gif'



         function changeImages(a_image, a_new_src) {
            a_image.src = a_new_src;   
         }

         function jump(a_location) {
            location.href = 'http://' + a_location + '.uhk.cz';   
         }


         function doShow() {

           var t_eco = document.all.eco_off;
           var t_tour = document.all.tour_off;
           var t_sec = document.all.sec_off;
           var t_quality = document.all.quality_off;

           var step = 1;

           if (i <= 15) {
               i += 1;
               t_eco.style.height = 10 + i*step;
               t_tour.style.height = 10 + i*step;
               t_sec.style.height = 10 + i*step;
               t_quality.style.height = 10 + i*step;

            } else {
               clearInterval (tm);
               t_eco.style.height = 28;
               t_tour.style.height = 25;
               t_sec.style.height = 27;
               t_quality.style.height = 27;
              // init(); // strat tracing the mouse
            }
         }



         function startShow (el) {
           el.style.display = "";
           el.style.height = 10;
         } 


         function setShow() {
           

           var t_eco = document.all.eco_off;
           var t_tour = document.all.tour_off;
           var t_sec = document.all.sec_off;
           var t_quality = document.all.quality_off;

           startShow (t_eco);
           startShow (t_tour);
           startShow (t_sec);
           startShow (t_quality);

           i = 0;

           tm = setInterval("doShow();", 50);
         }