diff --git a/app/views/feeds/new.html.erb b/app/views/feeds/new.html.erb
index b00d715..73e8d0c 100644
--- a/app/views/feeds/new.html.erb
+++ b/app/views/feeds/new.html.erb
@@ -1,5 +1,19 @@
+<%= javascript_include_tag 'validation' %>
+
 <h1>New feed</h1>
 
+<script type="text/javascript">
+function verifyFeedURL(s) {
+  alert(s );
+  if (! isUrl(s) ) {
+    alert('Feed URL is invalid.');
+    return false;
+  }
+  else
+    return true;
+}
+</script>
+
 <% form_for(@feed) do |f| %>
   <%= f.error_messages %>
 
@@ -12,8 +26,8 @@
     <%= f.text_field :interval %>
   </p>
   <p>
-    <%= f.submit 'Create' %>
+    <%= f.submit 'Create', :onClick => 'return verifyFeedURL( feed_url.value );' %>
   </p>
 <% end %>
 
-<%= link_to 'Back', feeds_path %>
\ No newline at end of file
+<%= link_to 'Back', feeds_path %>
diff --git a/db/development.sqlite3 b/db/development.sqlite3
index ca7b629..f21f062 100644
Binary files a/db/development.sqlite3 and b/db/development.sqlite3 differ
diff --git a/public/javascripts/validation.js b/public/javascripts/validation.js
new file mode 100644
index 0000000..eba4f2a
--- /dev/null
+++ b/public/javascripts/validation.js
@@ -0,0 +1,5 @@
+function isUrl(s) {
+	var regexp = /(ftp|http|https):\/\/(\w+:{0,1}\w*@)?(\S+)(:[0-9]+)?(\/|\/([\w#!:.?+=&%@!\-\/]))?/
+	return regexp.test(s);
+}
+