rubyonrailsin

Hi:
Sometimes I feel that I am so stupid. I put in my view the following:

<script type="text/javascript">

function lastSpy() {

var target = $('imagen');

if (!target) return false;
new Ajax.PeriodicalUpdater(target,
'http://localhost:3000/',{frequency:'1'})
}

Event.observe(window, 'load', lastSpy, false);
</script>
<div id="imagen">
<%=image_tag("/guarrada/Debug/foto.jpg") %>
</div>

$(document).ready(function() {
$('#imagen').hide();
});

and in the layout carpet inthe home.html.erb I added
<%= javascript_include_tag 'jquery'%>

What´s exactly wrong??

Thanks for your time

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