Using "//" instead of "http://" will use the appropriate protocol dep…

…ending on how the page was loaded. This would let people embed the Reddit share button via https (on pay.reddit.com, but eventually the official domain) securely.

r2/r2/public/static/button/button1.html

@@ -5,7 +5,7 @@
     <meta name="keywords" content=" reddit, reddit.com, vote, comment, submit " />
     <meta name="title" content=" reddit buttons " />
     <meta http-equiv="Content-Type" content="text/html; charset=UTF-8" />
-    <script src="http://ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js" type="text/javascript"></script>
+    <script src="//ajax.googleapis.com/ajax/libs/jquery/1.6.1/jquery.min.js" type="text/javascript"></script>
     <script src="/static/button.js" type="text/javascript"></script>
     <script type="text/javascript">
       var reddit = {};