1 files changed, 2 insertions, 0 deletions
diff --git a/js/util.js b/js/util.js
index ac0f517..b738d1e 100644
--- a/js/util.js
+++ b/js/util.js
@@ -1,6 +1,8 @@
 if (window.$) {
   $.fn.int = function(){ return parseInt($(this).val(),10) }
   $.fn.float = function(){ return parseFloat($(this).val()) }
+  $.fn.enable = function() { return $(this).attr("disabled",null) }
+  $.fn.disable = function() { return $(this).attr("disabled","disabled") }
 }
 
 var E = Math.E