jQuery is not working. Don't know why this isn't working!!!

[Jerrell_B]

I can't figure out why this is not working right now. Can anyone spot an error in the code below?

<div id="thinger">yellow.</div>
<div id="gizmo">red.</div>


<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>

<script>
$(function(){

$("#gizmo").css('color','red');
$("#thinger").hide();
	});
</script>

[Ayşe]

I wrote
<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>
instead of
<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.3/jquery.min.js"></script>

The code worked in Firefox 11.0