diff --git a/locales/jquery.timeago.cs.js b/locales/jquery.timeago.cs.js
index b713738..1d9fb80 100644
--- a/locales/jquery.timeago.cs.js
+++ b/locales/jquery.timeago.cs.js
@@ -1,18 +1,24 @@
 // Czech
-jQuery.timeago.settings.strings = {
-  prefixAgo: "před",
-  prefixFromNow: null,
-  suffixAgo: null,
-  suffixFromNow: null,
-  seconds: "méně než minutou",
-  minute: "minutou",
-  minutes: "%d minutami",
-  hour: "hodinou",
-  hours: "%d hodinami",
-  day: "1 dnem",
-  days: "%d dny",
-  month: "1 měsícem",
-  months: "%d měsíci",
-  year: "1 rokem",
-  years: "%d roky"
-};
\ No newline at end of file
+(function() {
+	function f(n, d, a) {
+		return a[d>=0 ? 0 : a.length==2 || n<5 ? 1 : 2];
+	}
+
+	jQuery.timeago.settings.strings = {
+		prefixAgo:     'před',
+		prefixFromNow: 'za',
+		suffixAgo:     null,
+		suffixFromNow: null,
+		seconds: function(n, d) {return f(n, d, ['méně než minutou', 'méně než minutu'])},
+		minute:  function(n, d) {return f(n, d, ['minutou', 'minutu'])},
+		minutes: function(n, d) {return f(n, d, ['%d minutami', '%d minuty', '%d minut'])},
+		hour:    function(n, d) {return f(n, d, ['hodinou', 'hodinu'])},
+		hours:   function(n, d) {return f(n, d, ['%d hodinami', '%d hodiny', '%d hodin'])},
+		day:     function(n, d) {return f(n, d, ['%d dnem', '%d den'])},
+		days:    function(n, d) {return f(n, d, ['%d dny', '%d dny', '%d dní'])},
+		month:   function(n, d) {return f(n, d, ['%d měsícem', '%d měsíc'])},
+		months:  function(n, d) {return f(n, d, ['%d měsící', '%d měsíce', '%d měsíců'])},
+		year:    function(n, d) {return f(n, d, ['%d rokem', '%d rok'])},
+		years:   function(n, d) {return f(n, d, ['%d lety', '%d roky', '%d let'])}
+	};
+})();