Only allow the updater's interval value to be greater than 0.

Set it to 1 otherwise.

4chan_x.user.js

@@ -2447,10 +2447,7 @@
             Conf[input.name] = input.checked;
           }
         } else if (input.name === 'Interval') {
-          $.on(input, 'input', function() {
-            this.value = parseInt(this.value, 10) || Conf['Interval'];
-            return $.cb.value.call(this);
-          });
+          $.on(input, 'input', this.cb.interval);
         } else if (input.type === 'button') {
           $.on(input, 'click', this.update);
         }
@@ -2460,6 +2457,12 @@
       return this.lastModified = 0;
     },
     cb: {
+      interval: function() {
+        var val;
+        val = parseInt(this.value, 10);
+        this.value = val > 0 ? val : 1;
+        return $.cb.value.call(this);
+      },
       verbose: function() {
         if (Conf['Verbose']) {
           Updater.count.textContent = '+0';

script.coffee

@@ -1907,9 +1907,7 @@ Updater =
           # Required for the QR's update after posting.
           Conf[input.name] = input.checked
       else if input.name is 'Interval'
-        $.on input, 'input', ->
-          @value = parseInt(@value, 10) or Conf['Interval']
-          $.cb.value.call @
+        $.on input, 'input', @cb.interval
       else if input.type is 'button'
         $.on input, 'click', @update
 
@@ -1919,6 +1917,10 @@ Updater =
     @lastModified = 0
 
   cb:
+    interval: ->
+      val = parseInt @value, 10
+      @value = if val > 0 then val else 1
+      $.cb.value.call @
     verbose: ->
       if Conf['Verbose']
         Updater.count.textContent = '+0'