重新加载jQuery和JS库

I reload my page using an updatepanel. In my masterpage I do the following.

<script src="//ajax.googleapis.com/ajax/libs/jquery/1.8.0/jquery.min.js" type="text/javascript"></script>  
<script src="App_Themes/Project/js/core.js"></script>
<script src="App_Themes/Project/js/libs/modernizr-1.6.min.js"></script>

When I partially reload a page with ajax (updatepanels), this files are nog loaded. So an slider is impossible to use.

Is there a way to load this files when I do a Ajax call?