Problem with using jquery

[eluser]kingmaoam[/eluser]
Hi,

I have a problem with jquery. I am using the datepicker.

When I initialize jquery with

Code:

<.script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jquery/1.5/jquery.min.js"></.script>
<.script type="text/javascript" src="http://ajax.googleapis.com/ajax/libs/jqueryui/1.8/jquery-ui.min.js"></.script>

everything works fine.

But when I switch to my local jquery Files

Code:

<.script type="text/javascript" src="&lt;?=base_url('js/jquery/jquery-1.8.0.min.js')?&gt;"></.script>
<.script type="text/javascript" src="&lt;?=base_url('js/jquery/jquery-ui-1.8.23.custom.min.js')?&gt;"></.script>

I am getting the javascript error

Code:

ReferenceError: $ is not defined [http://feuerwehr.sarbas.net/admin/content/createEinsatz/NDUyZWU1NjczMWR:241]

Has anyone had this problem before?
I have addes the dots at the front of the script tags for not to have them switched to [removed] in this post.

KR
Habib