Make sure you are importing it right. How are you using the script?

Import with:

    

<script src="https://code.jquery.com/jquery.min.js"></script>

Then you need to import jQuery UI with whatever theme you are using.


To run a script:

    

$(document).ready(function(){

    // PUT WHATEVER YOU WANT IN HERE

});

I like to use the method above, it will start the jQuery code once the document loads, but will not wait for images to load i believe. Keeping your scripts in an external file is a good idea. Keeps things organized.

Want to show us an example of your script? Otherwise we're shooting in the dark.