var MS = navigator.appVersion.indexOf("MSIE");
         window.isIE4 = (MS > 0) &&
            (parseInt(navigator.appVersion.substring(MS + 5, MS + 6)) 
               >= 4);

         function lead0(val) {
            return (val < 10) ? "0" + val.toString() : val;
         }

         function buildTime() {
            var time = new Date();
            var h = time.getHours();
            
			return lead0(h) + ":" + lead0(time.getMinutes()) + ":" +
               lead0(time.getSeconds());
         }

         function tick() {
            document.all.hodiny.innerText = buildTime();
         }

     function datum() {
            var cas = new Date();
            var den = cas.getDate();
            var mesic = cas.getMonth();
			var rok = cas.getFullYear();
			
			return den+'. '+(mesic+1)+'. '+rok;
         }